Publications passing the dialogue-based CALL criteria
									Exclusion criteria						Inclusion criteria							DBCALL criteria					System				Study									Type			Temporality						Variables studied
	authors	year	title	doi	pub_type	source	strand		pass_exclusion_criteria	available	not_duplicate	pub_language	peer_reviewed_pub		pass_inclusion_criteria	interactions	with_system	natural_language	for_language_learning	enough_on_ds		pass_dbcall_criteria	interlocutor	interaction_unit	interaction_role		system	system_type	dialogue_type		research_type	n_tot	proficiency_level	L1	context	age	treatment_duration_weeks	treatment_duration_hours		qualitative	quantitative		during	post	prepost	delayed_post	comp_condition		linguistic_sys	sys_accuracy	linguistic_perf_user	attitude_tw_system	perc_easeofuse	perc_usefulness	engagement_usage	motivational_effects	cognitive_effects	productive_skills	speaking	writing	holistic_proficiency	complexity_voc	accuracy	fluency	receptive_skills	others_exam		reliable_ES	keyword
1	Abu Shawar & Atwell	2007	Fostering language learner autonomy via adaptive conversation tutors		Conference paper	CL	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		0				Review	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatbot
2	Ai et al	2014	Sprinter: language technologies for interactive and multimedia language learning		Conference paper	LREC	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Sprinter	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue-based language learning game
3	Amoia et al	2012	A serious game for second language acquisition in a virtual environment		Journal article	Journal on Systemics, Cybernetics and Informatics	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		IFLEG-free, IFLEG-guided				Observational study	10								✔	✘		✔	✔	✘	✘	✘		✘	✘	✘	✘	✘	✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	intelligent tutoring system
4	Anderson et al	2008	Language learning with interactive virtual agent scenarios and speech recognition: Lessons learned	10.1002/cav.265	Journal article	Computer Animation and Virtual Worlds	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SPELL	Goal-oriented	Contextualized		Survey study	76			university	18+				✘	✔		✔	✔	✘	✘	✘		✘	✔	✘	✔	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	embodied virtual agent
5	Atwell et al	2000	User-guided system development in Interactive Spoken Language Education		Journal article	Natural Language Engineering	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		ISLE	Form-focused	Elicited		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	interactive spoken language education
6	Ayedoun et al	2015	A conversational agent to encourage willingness to communicate in the context of English as a foreign language		Conference paper	KES	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Ayedoun]	Goal-oriented	Contextualized		Effectiveness study	5	mixed		university	18+				✘	✔		✘	✘	✔	✘	✘		✘	✘	✘	✘	✘	✘	✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversational agent
7	Basiron	2008	Corrective feedback in dialogue-based computer assisted language learning		Conference paper	NZCSRSC	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		0				Review									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue-based CALL
8	Baur et al	2013	A textbook-based serious game for practising spoken language		Conference paper	ICERI	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CALL-SLT	Form-focused	Meaning-constrained		Observational study	0	A1	de	middle school	9-13	1	2		✔	✘		✔	✘	✘	✘	✘		✘	✘	✔	✔	✘	✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	serious game
9	Baur et al	2014	Crafting interesting dialogues in an interactive spoken CALL system		Conference paper	EDULEARN	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CALL-SLT	Form-focused	Meaning-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
10	Baur et al	2015	What motivates students to use online CALL systems? A case study		Conference paper	INTED	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CALL-SLT	Form-focused	Meaning-constrained		Effectiveness study	49			high school	13-17				✘	✔		✘	✔	✔	✘	✔		✘	✘	✘	✔	✘	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	speech-enable CALL game
11	Beal et al	2005	Individualized feedback and simulation-based practice in the Tactical Language Training System: an experimental evaluation		Conference paper	AIED	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		Effectiveness study	21	A0		military	18+				✔	✘		✘	✔	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✔	✔	✔	✘	✔	✔	✘	✘	✘	✘		✘
12	Bernstein et al	1999	Subarashii: Encounters in Japanese spoken language education		Journal article	CALICO Journal	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Subarashii	Form-focused	Meaning-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	interactive spoken language education
13	Bouillon et al	2011	A student-centered evaluation of a web-based spoken translation game		Conference paper	SLaTE	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CALL-SLT	Form-focused	Meaning-constrained		Effectiveness study	10	B1	zh	university	18+	1	3		✘	✔		✔	✘	✔	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✔	✘	✘	✔	✘	✔	✔	✘	✘	✘		✔	spoken translation game
14	Boylan & Micarelli	1998	Learning languages as “culture” with CALL		Book chapter		ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Conversation Rebuilding	Form-focused	Elicited		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversation rebuilding
15	Brusk et al	2007	DEAL: Dialogue management in SCXML for believable game characters		Conference paper	Conf. on Future Play	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		DEAL	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
16	Cabral et al	2014	MILLA Multimodal Interactive Language Learning Agent	-	Conference paper	ENTERFACE	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		MILLA	Reactive	Free		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	spoken dialogue
17	Cabral et al	2014	MILLA Multimodal Interactive Language Learning Agent	-	Conference paper	SemDial	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		MILLA	Reactive	Free		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	spoken dialogue
18	Campillos Llanos	2010	Tecnologias del habla y análisis de la voz. Aplicaciones en la enseñanza de la lengua		Journal article	Diálogo de la Lengua	ICALL		✔	✔	✔	es	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		0				Review	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
19	Chang (C.W.) et al	2010	Exploring the possibility of using humanoid robots as instructional tools for teaching a second language in primary school		Journal article	Journal of Educational Technology & Society	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Chang]	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	robot-assisted language learning
20	Chatterjee & Meijer	2005	DeMeCoT, the Delftse Methode Conversation Trainer		Conference paper	ACH/ALLC	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		DeMeCoT	Reactive	Free		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatbot
21	Chevalier & Cao	2008	Application and evaluation of speech technologies in language learning: experiments with the Saybot player		Conference paper	INTERSPEECH	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Saybot	Form-focused	Elicited		Technical evaluation									✘	✔		✔	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
22	Chevalier	2007	Speech Interaction with Saybot, a CALL Software to Help Chinese Learners of English		Conference paper	SLaTE	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Saybot	Form-focused	Elicited		Technical evaluation									✘	✔		✔	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
23	Chiu et al	2007	A study of web-based oral activities enhanced by Automatic Speech Recognition for EFL college learning		Journal article	Computer Assisted Language Learning	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CandleTalk	Form-focused	Elicited		Effectiveness study	49	mixed	nl	university	18+				✘	✔		✘	✔	✔	✘	✔		✘	✘	✘	✔	✔	✔	✘	✘	✔	✔	✔	✘	✔	✘	✘	✘	✘	✘		✔	ASR-based CALL
24	Cho & Lee	2009	A fully-automated computer-assisted language learning courseware for beginner-level Korean language learners		Conference paper	WSEAS	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Cho]	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	fully-automated CALL courseware
25	Choi et al	2016	Using a dialogue system based on dialogue maps for computer assisted second language learning	10.14705/rpnet.2016.eurocall2016.546	Conference paper	EUROCALL	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		GenieTutor	Form-focused	Meaning-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
26	Coniam	2004	Using language engineering programs to raise awareness of future CALL potential		Journal article	Computer Assisted Language Learning	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Dave ESL	Reactive	Free		Review									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chat bot
27	Coniam	2008	Evaluating the language resources of chatbots for their potential in English as a second language	10.1017/S0958344008000815	Journal article	ReCALL	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Cybelle, Dave ESL, Jabberwacky, Jenny, Lucy	Reactive			Technical evaluation									✔	✘		✔	✘	✘	✘	✘		✘	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatbot
28	Coniam	2014	The linguistic accuracy of chatbots: usability from an ESL perspective	10.1515/text-2014-0018	Journal article	Text & Talk	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Dave ESL, Elbot, Eugene Goostman, Jabberwacky, Julie Tinkerbell	Reactive			Technical evaluation	1								✘	✔		✔	✘	✘	✘	✘		✘	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatbot
29	Cornillie et al	2013	Tools that detectives use: in search of learner-related determinants for usage of optional feedback in a written murder mystery		Book chapter		ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		DialogDungeon	Form-focused	Meaning-constrained		Observational study	36								✘	✔		✘	✘	✔	✘	✔		✘	✘	✘	✔	✔	✔	✔	✘	✔	✔	✘	✔	✘	✘	✔	✘	✘	✘		✘
30	Cucchiarini et al	2014	ASR-based CALL systems and learner speech data: new resources and opportunities for research and development in second language learning		Conference paper	LREC	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		GREET	Form-focused	Form-focused exercises		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	ASR-based CALL
31	Culley et al	1986	A foreign-language adventure game: progress report on an application of AI to language instruction		Journal article	CALICO Journal	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Foreign Language Adventure Game	Goal-oriented	Form-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	game
32	Danilava	2013	Artificial conversational companions		Conference paper	AAAI	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Artificial Conversational Companion	Reactive	Free		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversational companion
33	Danilava et al	2013	Towards computational models for a long-term interaction with an artificial conversational companion		Conference paper	AAAI	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Artificial Conversational Companion	Reactive	Free		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversational companion
34	De Gasperis & Florio	2012	Learning to read/type a second language in a chatbot enhanced environment		Conference paper	International Workshop on Evidence-Based Technology Enhanced Learning	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Fable expert FAQ-chatbot	Form-focused	Meaning-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatbot
35	de Wet et al	2009	Automatic assessment of oral language proficiency and listening comprehension	10.1016/j.specom.2009.03.002	Journal article	Speech Communication	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[deWet]	Form-focused	Form-focused exercises		Technical evaluation									✘	✔		✔	✘	✘	✘	✔		✘	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
36	Dejos et al	2016	CALL-SLT: a first experiment in a real FFL training for employees of French companies		Conference paper	ICT for Language Learning	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CALL-SLT	Form-focused	Meaning-constrained		Observational study	10	A2	mixed	language school	18+	10			✔	✔		✔	✔	✘	✘	✘		✘	✘	✘	✔	✔	✔	✘	✘	✔	✔	✔	✘	✘	✘	✔	✘	✘	✘		✘	virtual dialogue
37	Delorme & Lehuen	2003	Dialog planning and domain knowledge modeled in terms of tasks and methods: a flexible framework for dialog managing		Conference paper	ISMIS	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Sampras/Virtual Kitchen	Form-focused	Meaning-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
38	DeSmedt	1995	Herr Kommissar: an ICALL conversation simulator for intermediate German		Book chapter		ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Her Kommissar	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversation simulator
39	Ehsani et al	1997	Subarashii: Japanese interactive spoken language education		Conference paper	EUROSPEECH	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Subarashii	Form-focused	Meaning-constrained		Survey study	34								✘	✔		✔	✔	✘	✘	✘		✘	✔	✘	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	interactive spoken language education
40	Ehsani et al	2000	An interactive dialog system for learning Japanese	10.1016/S0167-6393(99)00042-4	Journal article	Speech Communication	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Subarashii	Form-focused	Meaning-constrained		Survey study	47								✔	✔		✔	✔	✘	✘	✘		✘	✔	✘	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
41	Engwall	2012	Analysis of and feedback on phonetic features in pronunciation training with a virtual teacher		Journal article	Computer Assisted Language Learning	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		ARTUR	Form-focused	Form-focused exercises		Observational study	7								✔	✘		✔	✘	✘	✘	✘		✘	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	embodied conversational agent
42	Engwall et al	2004	Design strategies for a virtual language tutor		Conference paper	INTERSPEECH	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		ARTUR	Form-focused	Form-focused exercises		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
43	Engwall et al	2006	Designing the user interface of the computer-based speech training system ARTUR based on early user tests	10.1080/01449290600636702	Journal article	Behaviour & Information Technology	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		ARTUR	Form-focused	Form-focused exercises		Observational study	6								✔	✘		✔	✔	✘	✘	✘		✔	✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	speech training system
44	Eskenazi & Hansma	1998	The Fluency pronunciation trainer		Conference paper	STiLL	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Fluency	Form-focused	Elicited		Technical evaluation									✘	✘		✘	✘	✘	✘	✘		✘	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	pronunciation trainer
45	Eskenazi	1999	Using automatic speech processing for foreign language pronunciation tutoring: Some issues and a prototype		Conference paper	Language Learning & Technology	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Fluency	Form-focused	Elicited		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	pronunciation trainer
46	Eskenazi	2009	An overview of spoken language technology for education		Journal article	Speech Communication	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Subarashii, Let's Go, SCILL	Goal-oriented			Review	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	spoken dialogue system
47	Eskenazi et al	1999	User adaptation in the Fluency pronunciation trainer		Conference paper	EUROSPEECH	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Fluency	Form-focused	Elicited		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	pronunciation trainer
48	Eskenazi et al	2000	The Fluency pronunciation trainer: update and user issues		Conference paper	InSTIL/ICALL	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Fluency	Form-focused	Elicited		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	pronunciation trainer
49	Feuerman et al	1987	The CALLE Project		Journal article	CALICO Journal	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CALLE	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue-based language instruction system
50	Fryer & Carpenter	2006	Bots as language learning tools		Journal article	Language Learning & Technology	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Jabberwacky	Reactive	Free		Review	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatbot
51	Fryer & Nakao	2009	Assessing chatbots for EFL learner use		Conference paper	JALT	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Jabberwacky	Reactive	Free		Observational study	36								✔	✔		✔	✘	✘	✘	✘		✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatbot
52	Gamper & Knapp	2002	A review of Intelligent CALL systems		Journal article	Computer Assisted Language Learning	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		0				Review	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
53	Gardent et al	2013	Weakly and strongly constrained dialogues for language learning	-	Conference paper	SIGDIAL	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		IFLEG-free, IFLEG-guided				System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
54	Goda et al	2014	Conversation with a chatbot before an online EFL group discussion and the effects on critical thinking		Journal article	Journal of Information and Systems in Education	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Eliza (adapted version)	Reactive	Free		Effectiveness study	67		jp	university	18+				✘	✔		✘	✘	✔	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✔	chatbot
55	Hamburger & Hashim	1992	Foreign language tutoring and learning environment		Book chapter		ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		FLUENT	Form-focused	Meaning-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	immersion-style language tutoring
56	Hamburger	1995	Tutorial tools for language learning by two-medium dialogue		Book chapter		ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		FLUENT	Form-focused	Meaning-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversational ICALL system
57	Hamburger et al	1993	Structuring two-medium dialog for learning language and other things		Conference paper		ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		FLUENT	Form-focused	Meaning-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
58	Han	2012	Robot Assisted Language Learning		Journal article	Language Learning & Technology	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		0				Review	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	robot-assisted language learning
59	Harless et al	1999	Virtual dialogues with native speakers: the evaluation of an interactive multimedia method		Journal article	CALICO Journal	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Conversim	Form-focused	Elicited		Effectiveness study									✔	✔		✘	✘	✔	✘	✔		✘	✘	✘	✔	✔	✔	✘	✘	✔	✔	✔	✘	✔	✘	✘	✘	✔	✘		✔	virtual dialogue
60	Harroff	1986	Die Sprachmaschine: a microworld for language experimentation		Journal article	CALICO Journal	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Die Sprachmaschine	Form-focused	Form-focused exercises		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	microworld
61	Hassani et al	2013	Architectural design and implementation of intelligent embodied conversational agents using fuzzy knowledge base	10.3233/IFS-120687	Journal article	Journal of Intelligent and Fuzzy Systems	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		IVELL	Goal-oriented	Contextualized		Technical evaluation	10	B1		university	18+				✘	✔		✔	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	embodied conversational agent
62	Hassani et al	2016	Design and implementation of an intelligent virtual environment for improving speaking and listening skills	10.1080/10494820.2013.846265	Journal article	Interactive Learning Environments	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		IVELL	Goal-oriented	Contextualized		Effectiveness study	10	B1		university	18+				✘	✔		✔	✘	✘	✘	✘		✘	✔	✔	✘	✘	✘	✘	✘	✔	✔	✔	✘	✔	✔	✔	✔	✘	✘		✔	intelligent virtual environment
63	Hjalmarsson et al	2007	Dealing with DEAL: a dialogue system for conversation training		Conference paper	SIGDIAL	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		DEAL	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
64	Höhn	2015	Dealing with trouble: A data-driven model of a repair type for a conversational agent	-	Conference paper	AAAI	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Hohn]	Reactive	Free		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversational agent
65	Höhn	2016	Data-driven repair models for text chat with language learners		Dissertation		ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Hohn]	Reactive	Free											✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	communicative intelligent CALL
66	Holden & Sykes	2011	Leveraging mobile games for place-based language learning		Journal article	International Journal of Game-Based Learning	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Mentira	Narrative	Branching		Observational study	68								✔	✘		✔	✔	✘	✘	✘		✘	✘	✘	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	language learning game
67	Holland et al	1999	Preliminary tests of language learning in a speech-interactive graphics microworld		Journal article	CALICO Journal	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		MILT-TXT	Form-focused	Meaning-constrained		Effectiveness study	6			military	18+				✘	✔		✘	✔	✘	✘	✘		✘	✘	✘	✔	✔	✔	✘	✘	✔	✔	✔	✘	✘	✔	✔	✔	✘	✘		✘	speech-interactive microworld
68	Huang (Y.T.) et al	2008	An English dialogue companion system for supporting conversation practice	-	Conference paper	ICCE	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		EDC	Reactive	Free		Effectiveness study	66		zh	primary school		5	3		✔	✔		✘	✔	✔	✘	✔		✘	✘	✘	✔	✔	✔	✘	✘	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
69	Jehle	1987	A free-form dialog program in Spanish		Journal article	CALICO Journal	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SPANLAP	Reactive	Free		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue program
70	Jia & Chen	2008	Motivate the learners to practice English through playing with chatbot CSIEC		Conference paper	Technologies for E-Learning and Digital Entertainment	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CSIEC	Reactive	Free		Survey study	1783			high school					✔	✔		✔	✔	✘	✘	✘		✘	✘	✔	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatbot
71	Jia & Chen	2008	Script-based design for human-computer dialog in given scenarios for English learners		Conference paper	ICALT	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CSIEC	Reactive	Free		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
72	Jia & Chen	2009	The further development of CSIEC project driven by application and evaluation in English education	10.1111/j.1467-8535.2008.00881.x	Journal article	British Journal of Educational Technology	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CSIEC	Reactive	Free		Survey study	1783			high school					✔	✔		✔	✔	✘	✘	✘		✘	✘	✘	✔	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
73	Jia & Ruan	2008	Use chatbot CSIEC to facilitate the individual learning in English instruction: A case study		Conference paper	ITS	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CSIEC	Reactive	Free		Survey study									✘	✔		✘	✔	✘	✘	✘		✘	✘	✘	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatbot
74	Jia	2004	CSIEC (computer simulator in educational communication): a virtual context-adaptive chatting partner for foreign language learners		Conference paper	ICALT	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CSIEC	Reactive	Free		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	virtual chatting partner
75	Jia	2008	The generation of textual entailment with NLML in an intelligent dialogue system for language learning CSIEC	10.1109/NLPKE.2008.4906806	Conference paper	NLP-KE	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CSIEC	Reactive	Free		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
76	Jia	2009	CSIEC: A computer assisted English learning chatbot based on textual knowledge and reasoning	10.1016/j.knosys.2008.09.001	Journal article	Knowledge-Based Systems	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CSIEC	Reactive	Free		Observational study	1783			high school					✔	✘		✔	✘	✘	✘	✘		✘	✘	✔	✘	✘	✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatbot
77	Jia	2009	An AI framework to teach English as a Foreign Language: CSIEC		Journal article	AI Magazine	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CSIEC	Reactive	Free		Effectiveness study	1783			high school					✔	✔		✔	✘	✔	✘	✘		✘	✘	✔	✔	✔	✔	✘	✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✔		✘	dialogue system
78	Jia et al	2013	Effects of an intelligent web-based English instruction system on students' academic performance	10.1111/jcal.12016	Journal article	Journal of Computer Assisted Learning	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CSIEC	Reactive	Free		Effectiveness study	452			high school					✘	✔		✘	✘	✔	✘	✔		✘	✘	✘	✘	✘	✘	✘	✘	✔	✔	✘	✔	✘	✔	✘	✘	✘	✔		✔	dialogue simulation
79	Johnson & Beal	2005	Iterative evaluation of a large-scale, intelligent game for language learning		Conference paper	AIED	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		Observational study	6	mixed		military	18+				✔	✘		✔	✔	✘	✘	✘		✘	✘	✘	✔	✘	✘	✔	✘	✔	✔	✔	✘	✔	✔	✘	✘	✘	✘		✘
80	Johnson & Sagae	2010	Adaptive agents for promoting intercultural skills	-	Conference paper	CEIJR	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	pedagogic conversational agent
81	Johnson & Valente	2009	Tactical Language and Culture Training Systems: Using AI to Teach Foreign Languages and Cultures		Journal article	AI Magazine	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		System description		A0		military	18+				✔	✔		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
82	Johnson & Wu	2008	Assessing aptitude for learning with a serious game for foreign language and culture		Conference paper	ITS	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		Observational study	49	mixed		military	18+				✘	✔		✔	✘	✘	✘	✘		✘	✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
83	Johnson	2007	Serious use of a serious game for language learning		Conference paper	AIED	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		Effectiveness study	89	A0		military	18+				✘	✔		✘	✔	✘	✘	✘		✘	✘	✘	✔	✔	✘	✘	✘	✔	✔	✔	✘	✔	✘	✘	✘	✘	✘		✘	game
84	Johnson	2009	A simulation-based approach to training operational cultural competence		Conference paper	ITS	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		System description				military	18+				✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
85	Johnson	2010	Using immersive simulations to develop intercultural competence		Book chapter		SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	immersive simulation
86	Johnson et al	2004	The DARWARS tactical language training system		Conference paper	I/ITSEC	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		System description				military	18+				✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
87	Johnson et al	2004	Tactical language training system: Supporting the rapid acquisition of foreign language and cultural skills		Conference paper	InSTIL/ICALL	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		System description				military	18+				✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
88	Johnson et al	2005	Serious games for language learning: how much game, how much AI?		Conference paper	AIED	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	game
89	Johnson et al	2010	Expecting the unexpected: Warehousing and analyzing data from ITS field use	10.1007/978-3-642-13437-1_68	Conference paper	Lecture Notes in Computer Science	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		Observational study	45		en	military	18+				✘	✔		✔	✘	✘	✘	✘		✘	✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	intelligent tutoring system
90	Kaplan & Holland	1995	The application of learning theory to the design of a second language tutor		Book chapter		ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		MILT-TXT	Form-focused	Meaning-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	simulated dialogue
91	Kaplan et al	1998	The Military Language Tutor (MILT) Program: An Advanced Authoring System		Journal article	Computer Assisted Language Learning	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		MILT-DSR	Form-focused	Elicited		Effectiveness study	16								✘	✔		✘	✘	✔	✘	✘		✘	✘	✘	✔	✘	✔	✘	✘	✔	✔	✔	✘	✘	✔	✔	✔	✘	✘		✘	intelligent tutoring system
92	Kim (N.Y.)	2016	Effects of Voice Chat on EFL Learners’ Speaking Ability according to Proficiency Levels	10.15702/mall.2016.19.4.63	Journal article	Multimedia-Assisted Language Learning	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Indigo	Reactive	Free		Effectiveness study		mixed	kr	university	18+	16	3		✘	✔		✘	✔	✔	✘	✘		✘	✘	✘	✘	✘	✘	✘	✔	✔	✔	✔	✘	✔	✘	✘	✘	✘	✘		✔	chatbot
93	Knott & Vlugter	2008	Multi-agent human-machine dialogue: issues in dialogue management and referring expression semantics		Journal article	Artificial Intelligence	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Te Kaitito	Goal-oriented	Form-constrained		Effectiveness study	108			university	18+				✘	✔		✘	✘	✔	✘	✔		✘	✘	✘	✘	✘	✘	✘	✘	✔	✘	✘	✘	✘	✘	✔	✘	✘	✔		✘	human-machine dialogue
94	Kondo et al	2009	Error judgment in a language education system oriented for focus on form	-	Conference paper	ICCE	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		JDT	Form-focused	Elicited		Technical evaluation									✘	✔		✘	✔	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
95	Kondo et al	2010	Form-wise error detection in a FonF-based language education system	-	Conference paper	ICCE	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		JDT	Form-focused	Elicited		Technical evaluation									✘	✔		✘	✔	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
96	Kramsch et al	1985	An overview of the MIT Athena language learning project		Journal article	CALICO Journal	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		LINGO	Goal-oriented	Contextualized		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
97	Kruger & Hamilton	1997	RECALL: individual language tutoring through intelligent error diagnosis	10.1017/S095834400000478X	Journal article	ReCALL	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		RECALL	Goal-oriented	Form-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	intelligent tutoring system
98	Kuwa et al	2016	Classification of utterance acceptability based on BLEU Scores for dialogue-based CALL systems	10.1007/978-3-319-45510-5_58	Conference paper	TSD	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Nagai]	Form-focused	Meaning-constrained		Technical evaluation			jp						✘	✔		✘	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue-based CALL
99	Kweon (O.P.) et al	2004	A Japanese dialogue-based CALL system with mispronunciation and grammar error detection		Conference paper	ICSLP	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Kweon]	Goal-oriented	Contextualized		Technical evaluation			kr						✘	✔		✔	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue-based CALL
100	Kweon (O.P.) et al	2005	A grammatical error detection method for dialogue-based CALL system	10.5715/jnlp.12.4_137	Journal article	Journal of Natural Language Processing	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Kweon]	Goal-oriented	Contextualized		Technical evaluation	13	mixed	kr						✘	✔		✘	✘	✘	✘	✔		✘	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue-based CALL
101	Kwon et al	2015	GenieTutor: a computer assisted second-language learning system based on spoken language understanding		Conference paper	IWSDS	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		GenieTutor	Form-focused	Meaning-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	computer assisted second- language learning system using spoken dialog processing technology
102	Kwon et al	2016	Task-oriented spoken dialog system for second-language learning	10.14705/rpnet.2016.eurocall2016.568	Conference paper	EUROCALL	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		GenieTutor	Form-focused	Meaning-constrained		Survey study			kr	university					✘	✔		✔	✔	✘	✘	✘		✘	✘	✔	✔	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue-based CALL
103	Lech & De Smedt	2006	Dreistadt: A language enabled MOO for language learning		Conference paper	ECAI	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Dreistadt	Goal-oriented	Form-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	MOO
104	Lee (J.) & Seneff	2006	Automatic grammar correction for second-language learners		Conference paper	INTERSPEECH	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SCILL	Goal-oriented	Contextualized		Technical evaluation	4								✘	✔		✘	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
105	Lee (S.) et al	2010	Intention-based corrective feedback generation using context-aware model		Conference paper	CSEDU	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		0				Technical evaluation									✘	✔		✘	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
106	Lee (S.) et al	2010	Cognitive effects of robot-assisted language learning on oral skills		Conference paper	INTERSPEECH	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Mero, Engkey	Goal-oriented			Effectiveness study	21	A1		primary school	6-11				✘	✔		✘	✘	✔	✘	✘		✘	✘	✘	✘	✘	✘	✘	✔	✔	✔	✔	✘	✔	✔	✔	✘	✔	✘		✔	robot-assisted language learning
107	Lee (S.) et al	2011	Grammatical error simulation for computer-assisted language learning	10.1016/j.knosys.2011.03.008	Journal article	Knowledge-Based Systems	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		POMY	Goal-oriented	Contextualized		Technical evaluation									✘	✘		✘	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
108	Lee (S.) et al	2011	On the effectiveness of Robot-Assisted Language Learning	10.1017/S0958344010000273	Journal article	ReCALL	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Mero, Engkey	Goal-oriented			Effectiveness study	21	A1		primary school	6-11				✘	✔		✘	✘	✔	✘	✘		✘	✘	✘	✔	✔	✘	✘	✔	✔	✔	✔	✘	✔	✔	✔	✘	✔	✘		✔	robot-assisted language learning
109	Lee (K.) et al	2011	Effects of Language Learning Game on Korean Elementary School Students		Conference paper	SLaTE	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		POMY	Goal-oriented	Contextualized		Effectiveness study	10								✘	✔		✘	✘	✔	✘	✘		✘	✘	✘	✘	✘	✘	✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✔	dialogue-based language learning game
110	Lee (S.) et al	2012	Foreign language tutoring in oral conversations using spoken dialog systems	10.1587/transinf.E95.D.1216	Journal article	IEICE Transactions on Information and Systems	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		POMY, Mero, Engkey	Goal-oriented			Effectiveness study	21	A1		primary school	6-11				✘	✔		✘	✘	✔	✘	✘		✘	✔	✘	✔	✔	✘	✘	✔	✔	✔	✔	✘	✔	✔	✔	✘	✔	✘		✔	spoken dialogue system
111	Lee (K.) et al	2014	POSTECH Immersive English Study (POMY): Dialog-based language learning game	10.1587/transinf.E97.D.1830	Journal article	IEICE Transactions on Information and Systems	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		POMY	Goal-oriented	Contextualized		Effectiveness study	25	mixed		middle school	11-12				✘	✔		✘	✘	✔	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✔	✔	✔	✘	✘	✘	✔	✔	✘	✘		✔	dialogue-based language learning game
112	Lehuen	2000	A dialogue-based architecture for computer aided language learning		Conference paper	AAAI FS	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Sampras/Virtual Kitchen	Form-focused	Meaning-constrained		System description	5								✔	✘		✘	✔	✘	✘	✘		✘	✘	✘	✘	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue-based CALL
113	Lelouche	2008	How the PILÉFACE system, dealing with pragmatics, takes cultural factors into account		Conference paper	ITS	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		PILÉFACE	Form-focused	Meaning-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
114	Levin & Evans	1995	ALICE-chan: A case study in ICALL theory and practice		Book chapter		ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		ALICE-chan	Form-focused	Meaning-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
115	Lombardi	2012	From the curtain to the Façade: Enhancing ESL/EFL learners’ communicative competence through an interactive digital drama		Journal article	Scenario	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Façade	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	interactive digital drama
116	Mazur et al	2011	Proposal for a conversational English tutoring system that encourages user engagement		Conference paper	ICCE	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Mazur]	Reactive	Free		Review	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversational language tutoring system
117	Menzel et al	2001	Interactive pronunciation training	10.1017/S0958344001000714	Journal article	ReCALL	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		ISLE	Form-focused	Elicited		Technical evaluation									✔	✘		✘	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	pronunciation training environment
118	Meron et al	2007	Improving the authoring of foreign language interactive lessons in the tactical language training system.		Conference paper	SLaTE	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	interactive lessons
119	Micarelli & Boylan	1997	Conversation rebuilding: from the foreign language classroom to implementation in an intelligent tutoring system		Journal article	Computers & Education	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Conversation Rebuilding	Form-focused	Elicited		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	intelligent tutoring system
120	Micarelli & Boylan	1997	Foreign-language tutoring systems today: Old-fashioned teaching with newfangled gadgets		Journal article	Cognitive Systems	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Conversation Rebuilding	Form-focused	Elicited		Review	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversation rebuilding
121	Michel & Lehuen	2002	Conception of a language learning environment based on the communicative and actional approaches		Conference paper	ITS	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Sampras/Virtual Kitchen	Form-focused	Meaning-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	virtual agent
122	Molla et al	1988	Artificial intelligence in a German adventure game: Spion in PROLOG		Journal article	CALICO Journal	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Spion	Goal-oriented	Form-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	game
123	Morton & Jack	2005	Scenario-based spoken interaction with virtual agents	10.1080/09588220500173344	Journal article	Computer Assisted Language Learning	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SPELL	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	virtual agent
124	Morton & Jack	2010	Speech interactive computer-assisted language learning: a cross-cultural evaluation	10.1080/09588221.2010.493524	Journal article	Computer Assisted Language Learning	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SPELL	Goal-oriented	Contextualized		Effectiveness study	76								✔	✔		✔	✘	✔	✘	✔		✘	✔	✘	✔	✔	✘	✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	speech interactive CALL
125	Morton et al	2008	Evaluation of a speech interactive CALL system		Book chapter		SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SPELL	Goal-oriented	Contextualized		Survey study	52			high school	13-17				✘	✔		✔	✔	✘	✘	✘		✘	✔	✘	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	speech interactive CALL
126	Morton et al	2011	Attitudes to subtitle duration and the effect on user responses in speech interactive foreign language learning		Journal article	Journal of Multimedia	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SPELL	Goal-oriented	Contextualized		Survey study	41			high school	14-15				✔	✔		✔	✔	✘	✘	✔		✘	✘	✔	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
127	Morton et al	2012	Interactive language learning through speech-enabled virtual scenarios		Journal article	Advances in Human-Computer Interaction	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SPELL	Goal-oriented	Contextualized		Survey study									✘	✔		✔	✘	✔	✘	✘		✘	✔	✘	✔	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	speech interactive CALL
128	Mulford	1989	Semantic processing for communicative exercises in foreign-language learning.		Journal article	Computers and the Humanities	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Foreign Language Adventure Game	Goal-oriented	Form-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	game
129	Murray	1995	Lessons learned from the Athena language learning project: using natural language processing, graphics, speech processing and interactive video for communication-based language learning		Book chapter		ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		LINGO	Goal-oriented	Contextualized		Review	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	communication-based language learning
130	Nagai et al	2012	Sentence classification with grammatical errors and those out of scope of grammar assumption for dialogue-based CALL systems	10.1007/978-3-642-32790-2_75	Conference paper	TSD	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Nagai]	Form-focused	Meaning-constrained		Technical evaluation	14		jp	university	18+				✘	✔		✘	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue-based CALL
131	Noh et al	2010	Script-description pair extraction from text documents of english as second language podcast		Conference paper	CSEDU	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		POMY	Goal-oriented	Contextualized		Technical evaluation									✘	✔		✔	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue-based CALL
132	Noh et al	2011	POMY: a conversational virtual environment for language learning in POSTECH		Conference paper	SIGDIAL	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		POMY	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	game
133	Noh et al	2012	An example-based approach to ranking multiple dialog states for flexible dialog management	10.1109/JSTSP.2012.2229692	Journal article	IEEE Journal of Selected Topics in Signal Processing	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		POMY	Goal-oriented	Contextualized		Effectiveness study	40								✘	✔		✔	✘	✔	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✔	✔	✘	✔	✘	✔	✘	✘	✘	✘		✔	dialogue-based CALL
134	Ohtsuki et al	2000	Issues for applying chatter bots to foreign language learning in virtual reality		Conference paper	IMSA	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Chat Bots Mediator	Reactive	Free		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatterbot
135	Okamoto & Yano	1994	Development of an Environmental ICAI System for English Conversation Learning		Journal article	IEICE Transactions on Information and Systems	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		English Conversation Learning	Form-focused	Form-focused exercises		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue simulation
136	Petersen	2010	Implicit corrective feedback in computer-guided interaction: does mode matter?		Dissertation		ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Sasha	Goal-oriented	Contextualized		Effectiveness study	56	mixed		high school	15-18				✔	✔		✔	✘	✔	✔	✔		✘	✔	✘	✘	✘	✘	✘	✘	✔	✔	✔	✔	✘	✘	✔	✘	✘	✘		✔	computer-guided interaction
137	Powers et al	2008	Language teaching in a mixed reality games environment	10.1145/1389586.1389668	Conference paper	PETRA	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		PETA	Goal-oriented	Contextualized		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversational agent
138	Powers et al	2008	PETA - A pedagogical embodied teaching agent	10.1145/1389586.1389658	Conference paper	PETRA	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		PETA	Goal-oriented	Contextualized		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversational agent
139	Price (P.) & Rypa	1998	Speech technology and language learning: Some examples from VILTS, the Voice Interactive Language Training System		Conference paper	AATOLL	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		VILTS	Form-focused	Meaning-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	voice-interactive CALL
140	Price (C.) et al	1999	L2tutor: A Mixed-Initiative Dialogue System for Improving Fluency		Journal article	Computer Assisted Language Learning	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		L2tutor	Goal-oriented	Contextualized		Technical evaluation	13								✔	✘		✔	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
141	Raux & Eskenazi	2004	Using task-oriented spoken dialogue systems for language learning: potential, practical applications and challenges		Conference paper	INSTIL	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Let's Go	Goal-oriented	Contextualized		Technical evaluation									✘	✔		✔	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	spoken dialogue system
142	Rayner & Tsourakis	2013	Methodological issues in evaluating a spoken CALL game: Can crowdsourcing help us perform controlled experiments?		Conference paper	SLaTE	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CALL-SLT	Form-focused	Meaning-constrained		Effectiveness study	130	mixed	mixed	laboratory	18+	1			✘	✔		✘	✘	✔	✘	✔		✘	✘	✘	✘	✘	✘	✘	✘	✘	✔	✔	✘	✔	✘	✘	✘	✘	✘		✘	spoken CALL game
143	Rayner et al	2012	CALL-SLT: A Spoken CALL System based on grammar and speech recognition		Journal article	Linguistic Issues in Language Technology	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CALL-SLT	Form-focused	Meaning-constrained		Effectiveness study	24	A1	mixed	laboratory	18+	1	1		✘	✔		✔	✘	✔	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✔	✔	✔	✘	✘	✘	✔	✘	✘	✘		✔	spoken CALL system
144	Rayner et al	2014	CALL-SLT lite: A minimal framework for building interactive speech-enabled CALL applications		Conference paper	WOCCI	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CALL-SLT	Form-focused	Meaning-constrained		Technical evaluation									✘	✔		✘	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
145	Rayner et al	2015	Supervised learning of response grammars in a spoken CALL system		Conference paper	SLaTE	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CALL-SLT	Form-focused	Meaning-constrained		Technical evaluation									✘	✔		✘	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
146	Rayner et al	2015	Build your own speech-enabled online CALL course, no experience required		Conference paper	INTED	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CALL-SLT	Form-focused	Meaning-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
147	Reeder (K.) & Hart	2001	Edubba: Multimedia software to support academic writing in English		Journal article	Zeitschrift für Interkulturellen Fremdsprachenunterricht	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Edubba	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	virtual world
148	Reeder (F.)	2000	Could you repeat the question? [FLUENT language learning system]		Conference paper	AAAI FS	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		FLUENT	Form-focused	Meaning-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	intelligent tutoring system
149	Reeder (K.)	2010	Edubba: Real-world writing tasks in a virtual world		Book chapter		SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Edubba	Goal-oriented	Contextualized		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	virtual world
150	Rosenthal-von der Putten et al	2016	Robots or agents - Neither helps you more or less during second language acquisition experimental study on the effects of embodiment and type of speech output on evaluation and alignment	10.1007/978-3-319-47665-0_23	Conference paper	IVA	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Rosenthal]	Form-focused	Meaning-constrained		Effectiveness study	130	mixed	mixed	laboratory	18+	1	1		✘	✔		✘	✔	✔	✘	✔		✘	✘	✘	✔	✔	✔	✔	✘	✔	✔	✘	✔	✘	✘	✔	✔	✘	✘		✔	artificial tutor
151	Rypa & Price (P.)	1999	VILTS: a tale of two technologies		Journal article	CALICO Journal	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		VILTS	Form-focused	Meaning-constrained		Observational study	5								✔	✘		✘	✔	✘	✘	✘		✘	✘	✔	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	intelligent tutoring system
152	Rypa	1996	VILTS: The voice interactive language training system		Conference paper	CALICO	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		VILTS	Form-focused	Meaning-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	voice interactive language training system
153	Sagae et al	2011	Conversational agents in language and culture training		Book chapter	Conversational agents and natural language interaction	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		Observational study									✔	✘		✘	✔	✘	✘	✘		✘	✘	✘	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversational agent
154	Sanders & Sanders	1995	History of an AI spy game: Spion		Book chapter		ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Spion	Goal-oriented	Form-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	game
155	Sano et al	2011	Dialog strategy in a FonF-based language education system: Relative necessity of a form in a task	-	Conference paper	ICCE	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		JDT	Form-focused	Elicited		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
156	Schoelles & Hamburger	1996	Teacher-usable exercise design tools		Conference paper	ITS	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		FLUENT	Form-focused	Meaning-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	immersion-style language tutoring
157	Schoelles & Hamburger	1996	Cognitive tools for language pedagogy	10.1080/0958822960090210	Journal article	Computer Assisted Language Learning	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		FLUENT	Form-focused	Meaning-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversational language learning environment
158	Schoelles & Hamburger	1997	The NLP Role in Animated Conversation for CALL		Conference paper	ANLP	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		FLUENT	Form-focused	Meaning-constrained		Survey study	16								✔	✔		✔	✔	✘	✘	✘		✘	✘	✘	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversational language learning system
159	Seneff	2006	Interactive computer aids for acquiring proficiency in Mandarin		Conference paper	ISCSLP	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SCILL	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	spoken dialogue system
160	Seneff et al	2004	Spoken conversational interaction for language learning		Conference paper	InSTIL/ICALL	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SCILL	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	spoken dialogue system
161	Seneff et al	2004	Second language acquisition through human computer dialogue	10.1109/CHINSL.2004.1409656	Conference paper	ISCSLP	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SCILL	Goal-oriented	Contextualized		Technical evaluation									✘	✔		✘	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
162	Seneff et al	2007	Spoken dialogue systems for language learning		Conference paper	NAACL	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SCILL	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	spoken dialogue system
163	Sha	2009	AI-based chatterbots and spoken English teaching: a critical analysis	10.1080/09588220902920284	Journal article	Computer Assisted Language Learning	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Verbot, Jabberwacky, Ultra Hal	Reactive			Survey study	15								✔	✔		✔	✔	✘	✘	✘		✘	✘	✘	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatterbot
164	Si et al	2005	THESPIAN: an architecture for interactive pedagogical drama		Conference paper	AIED	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	interactive pedagogical drama
165	Stewart & File	2007	Let's Chat: A conversational dialogue system for second language practice	10.1080/09588220701331386	Journal article	Computer Assisted Language Learning	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Let's Chat	Narrative	Branching		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
166	Strik et al	2009	Developing a CALL System for Practicing Oral Proficiency: How to Design for Speech Technology, Pedagogy and Learners		Conference paper	SLaTE	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		DISCO	Form-focused	Elicited		Observational study	9								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘
167	Strik et al	2012	The DISCO ASR-based CALL system: practicing L2 oral skills and beyond.		Conference paper	LREC	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		DISCO	Form-focused	Elicited		Survey study	23	A2	mixed	university	18+				✘	✔		✘	✘	✘	✘	✘		✘	✔	✘	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	ASR-based CALL
168	Su et al	2013	A dialogue game framework with personalized training using reinforcement learning for computer-assisted language learning		Conference paper	ICASSP	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Su]	Form-focused	Form-focused exercises		Technical evaluation									✘	✔		✔	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue game
169	Su et al	2013	A recursive dialogue game framework with optimal policy offering personalized computer-assisted language learning	-	Conference paper	INTERSPEECH	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Su]	Form-focused	Form-focused exercises		Technical evaluation									✘	✔		✔	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue game
170	Su et al	2015	A recursive dialogue game for personalized computer-aided pronunciation training	10.1109/TASLP.2014.2375572	Journal article	IEEE/ACM Transactions on Audio, Speech, and Language Processing	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Su]	Form-focused	Form-focused exercises		Effectiveness study	2			university					✘	✔		✔	✘	✔	✘	✘		✘	✔	✔	✘	✘	✘	✘	✘	✔	✔	✔	✘	✘	✘	✔	✘	✘	✘		✘	dialogue game
171	Suzuki et al	2014	Controlling switching pause using an AR agent for interactive CALL system		Conference paper	HCI	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Suzuki]	Goal-oriented	Contextualized		Effectiveness study	10	B1		university	18+				✘	✔		✔	✔	✘	✘	✔		✘	✘	✔	✔	✔	✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	voice-interactive CALL
172	Sydorenko	2015	The use of computer-delivered structured tasks in pragmatic instruction: An exploratory study		Journal article	Intercultural Pragmatics	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SimCon	Goal-oriented	Contextualized		Observational study	33	A2		university	18+				✔	✘		✔	✘	✘	✘	✔		✘	✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	computer-delivered structured tasks
173	Tanghe	2009	The use of chatterbots in the language classroom		Journal article	STEM Journal	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		0				Review	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatterbot
174	Tsourakis et al	2014	Formative feedback in an interactive spoken CALL system		Conference paper	WOCCI	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CALL-SLT	Form-focused	Meaning-constrained		Survey study	39	mixed	de	high school	13-17	4			✘	✔		✔	✔	✘	✘	✘		✘	✘	✔	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	interactive spoken CALL
175	Underwood	1982	Simulated conversation as a CAI strategy		Journal article	Foreign Language Annals	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		FAMILIA	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	simulated conversation
176	Vlugter & Knott	2006	A multi-speaker dialogue system for computer-aided language learning		Conference paper	SemDial	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Te Kaitito	Goal-oriented	Form-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system for CALL
177	Vlugter et al	2004	A human-machine dialogue system for CALL		Conference paper	InSTIL/ICALL	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Te Kaitito	Goal-oriented	Form-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system for CALL
178	Vlugter et al	2006	Error correction using utterance disambiguation techniques		Conference paper	ALTW	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Te Kaitito	Goal-oriented	Form-constrained		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	CALL dialogue
179	Vlugter et al	2009	Dialogue-based CALL: a case study on teaching pronouns	10.1080/09588220902778260	Journal article	Computer Assisted Language Learning	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Te Kaitito	Goal-oriented	Form-constrained		Effectiveness study	108	A1		university	18+				✘	✔		✘	✘	✔	✘	✔		✘	✘	✘	✘	✘	✘	✘	✘	✔	✔	✘	✔	✘	✘	✔	✘	✘	✘		✘	dialogue-based CALL
180	Wachowicz & Scott	1999	Software that listens: it's not a question of whether, it's a question of how		Journal article	CALICO Journal	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TraciTalk	Form-focused	Elicited		Review									✔	✘		✔	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	speech interactive CALL
181	Walker et al	2011	Using ASR technology in language training for specific purposes: a perspective from Quebec, Canada		Journal article	CALICO Journal	CAPT		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Virtual Language Patient	Form-focused	Form-focused exercises		Effectiveness study	5								✔	✔		✔	✘	✔	✘	✘		✘	✘	✔	✔	✔	✘	✘	✘	✔	✔	✔	✘	✘	✘	✔	✘	✘	✘		✘	simulated dialogue
182	Wang (N.) & Johnson	2008	The politeness effect in an intelligent foreign language tutoring system		Conference paper	ITS	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		TLCTS	Form-focused	Meaning-constrained		Effectiveness study	61								✘	✔		✘	✘	✔	✘	✔		✘	✘	✘	✘	✘	✘	✘	✔	✔	✔	✔	✘	✘	✘	✔	✘	✘	✘		✘	pedagogical agent
183	Wang (Y.F.) & Petrina	2013	Using learning analytics to understand the design of an intelligent language tutor - Chatbot Lucy	10.14569/IJACSA.2013.041117	Journal article	International Journal of Advanced Computer Science and Applications	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Lucy	Reactive	Free		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatbot
184	Wang (C.) & Seneff	2006	High-quality speech-to-speech translation for computer-aided language learning	-	Journal article	ACM Transactions on Speech and Language Processing	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SCILL	Goal-oriented	Contextualized		Technical evaluation									✘	✔		✘	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
185	Wang (C.) & Seneff	2007	A spoken translation game for second language learning		Conference paper	AIED	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Let's Translate	Form-focused	Form-focused exercises		Survey study	12	mixed	mixed	laboratory	18+				✘	✔		✘	✔	✘	✘	✘		✘	✔	✘	✔	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	spoken translation game
186	Wang (C.C.) et al	2007	Task-based learning through dialogue management		Conference paper	ICCE	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Wang]	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue system
187	Wang (Y.F.) et al	2017	VILLAGE-Virtual Immersive Language Learning and Gaming Environment: Immersion and presence: Virtual immersive language learning and gaming environment	10.1111/bjet.12388	Journal article	British Journal of Educational Technology	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		VILLAGE	Goal-oriented	Contextualized		Survey study	80	mixed		language school	18+				✘	✔		✘	✔	✘	✘	✔		✘	✘	✘	✔	✘	✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	virtual world
188	Wik & Hjalmarsson	2009	Embodied conversational agents in computer assisted language learning	10.1016/j.specom.2009.05.006	Journal article	Speech Communication	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		DEAL	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	embodied conversational agent
189	Wik	2011	The virtual language teacher: Models and applications for language learning using embodied conversational agents		Dissertation		SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		DEAL	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	embodied conversational agent
190	Williams & van Compernolle	2009	The chatbot as a peer/tool for learners of French		Book chapter		Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Aghate	Reactive	Free		Observational study	104								✔	✘		✔	✘	✘	✘	✘		✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatbot
191	Wilske & Wolska	2008	Role-plays for CALL: System architecture and resources		Conference paper	ICL	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Wilske1]	Goal-oriented	Contextualized		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue game
192	Wilske & Wolska	2011	Meaning versus form in computer-assisted task-based language learning: a case study on the German dative		Journal article	Journal for Language Technology and Computational Linguistics	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Wilske2]	Goal-oriented	Contextualized		Effectiveness study	30								✘	✔		✘	✘	✔	✘	✔		✘	✘	✘	✘	✘	✘	✘	✘	✔	✔	✘	✔	✘	✘	✔	✘	✘	✘		✔	dialogue-based CALL
193	Wilske	2014	Form and meaning in dialog-based computer-assisted language learning		Dissertation		ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Wilske2]	Goal-oriented	Contextualized		Effectiveness study	33								✘	✔		✘	✘	✔	✘	✔		✘	✘	✘	✔	✔	✔	✘	✘	✔	✔	✘	✔	✘	✘	✔	✔	✘	✘		✔	dialogue-based CALL
194	Wolska & Wilske	2010	Form-focused task-oriented dialogues for computer assisted language learning: A pilot study on german dative		Conference paper	INTERSPEECH	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Wilske2]	Goal-oriented	Contextualized		Effectiveness study	22								✘	✔		✘	✘	✔	✘	✔		✘	✘	✘	✘	✘	✘	✘	✘	✔	✔	✘	✔	✘	✘	✔	✘	✘	✘		✔	dialogue system
195	Wolska & Wilske	2010	German subordinate clause word order in dialogue-based CALL		Conference paper	IMCSIT	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Wilske2]	Goal-oriented	Contextualized		Effectiveness study	15								✘	✔		✘	✘	✔	✘	✔		✘	✘	✘	✘	✘	✘	✘	✘	✔	✔	✘	✔	✘	✘	✔	✘	✘	✘		✔	dialogue-based CALL
196	Wolska & Wilske	2011	Assessing the effect of type-written form-focused dialogues on spoken language fluency		Conference paper	SLaTE	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Wilske2]	Goal-oriented	Contextualized		Effectiveness study	13								✘	✔		✘	✘	✔	✘	✔		✘	✘	✘	✘	✘	✘	✘	✘	✔	✔	✔	✘	✘	✘	✘	✔	✘	✘		✔	dialogue system
197	Wu (H.C.) & Seneff	2007	Reducing recognition error rate based on context relationships among dialogue turns	-	Conference paper	INTERSPEECH	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SCILL	Goal-oriented	Contextualized		Technical evaluation									✘	✔		✘	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	spoken dialogue system
198	Xu & Seneff	2012	Improving nonnative speech understanding using context and N-best meaning fusion	10.1109/ICASSP.2012.6289037	Conference paper	ICASSP			✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SCILL	Goal-oriented	Contextualized		Technical evaluation			zh						✘	✔		✔	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue game
199	Xu	2012	Language technologies in speech-enabled second language learning games: From reading to dialogue		Dissertation		SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SCILL	Goal-oriented	Contextualized		Technical evaluation	12								✘	✔		✔	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	speech-enabled language learning game
200	Yamada et al	2013	C4 (C quad): Development of the application for language learning based on social and cognitive presences		Conference paper	EUROCALL	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Mondo	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chatbot
201	Yamasaki et al	2012	Multimodal corpus of multi-party conversations in second language		Conference paper	LREC	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		0				Technical evaluation									✘	✔		✔	✘	✘	✘	✘		✘	✔	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	dialogue-based tutoring system
202	Yang & Zapata-Rivera	2010	Interlanguage pragmatics with a pedagogical agent: the request game	10.1080/09588221.2010.520274	Journal article	Computer Assisted Language Learning	ICALL		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Request game	Goal-oriented	Contextualized		Observational study	15								✔	✔		✔	✘	✘	✘	✘		✘	✔	✘	✔	✔	✔	✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	pedagogical agent
203	Ye & Young	2005	Improving the speech recognition performance of beginners in spoken conversational interaction for language learning	-	Conference paper	ECSCT	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		SCILL	Goal-oriented	Contextualized		Technical evaluation									✘	✔		✘	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	spoken dialogue system
204	Zacharski	2002	Conversational agents for language learning		Conference paper	IAAI	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Zacharski]	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversational agent
205	Zacharski	2003	A discourse system for conversational characters		Conference paper	CLITP	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		[Zacharski]	Goal-oriented	Contextualized		System description	0								✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	discourse system for conversational characters
206	Zakos & Capper	2008	CLIVE - An artificially intelligent chat robot for conversational language practice		Conference paper	SETN	Chatbots		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		CLIVE	Goal-oriented	Contextualized		Observational study	10								✔	✘		✔	✘	✘	✘	✘		✘	✔	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	chat robot
207	Zue et al	1996	Multilingual human-computer interactions: from information access to language learning		Conference paper	ICSLP	SDS/CA		✔	✔	✔	en	✔		✔	✔	✔	✔	L2	✔		✔	system	dialogue	task		Language Tutor	Goal-oriented	Contextualized		System description									✘	✘		✘	✘	✘	✘	✘		✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘	✘		✘	conversational system