Nine communication strategies and four categories of affective backchannels implemented in DiMaCA¶

Design · All designs
Evidence · no claims cited

Description¶

The authors selected nine communication strategies from Dörnyei and Scott's taxonomy (including Simplification/Approximation, Code-switching, Asking clarification, Suggesting AP, Asking confirmation, Asking repetition, Expressing NU, Guessing, Repetition) chosen for probable WTC-friendliness and technical feasibility. They also introduce four categories of affective backchannels — Congratulatory, Encouraging, Sympathetic, and Reassuring AB — 'to enable ECAs to explicitly convey thoughtful support to learners by congratulating them, cheering them up, or showing sympathy in accordance with the interaction state'.

Design Implications¶

Context¶

Requirements¶

CS selection follows a heuristically predefined order per state; AB selection is stochastic within the triggered category

Constraints¶

Response reject was excluded because it cannot be considered a WTC-friendly strategy, illustrating the selection criteria applied

Target Learners¶

L2 learners with low willingness to communicate

Learning Goals¶

Overcoming communication pitfalls and reducing anxiety during L2 conversation

Claims¶

DiMaCA: a dialogue management model combining communication strategies and affective backchannels to foster WTC-friendly agent conversations

Examples¶

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Key Sources¶

Emmanuel Ayedoun, Yuki Hayashi, Kazuhisa Seta. (2018). Adding Communicative and Affective Strategies to an Embodied Conversational Agent to Enhance Second Language Learners' Willingness to Communicate. Int J Artif Intell Educ. https://doi.org/10.1007/s40593-018-0171-6

Page metadata

Field	Value
`type`	`design`
`id`	`dimaca-cs-ab-strategy-sets`
`title`	`Nine communication strategies and four categories of affective backchannels implemented in DiMaCA`
`description`	`The authors selected nine communication strategies from Dörnyei and Scott's taxonomy (including Simplification/Approximation, Code-switching, Asking clarification, Suggesting AP, Asking confirmation, Asking repetition...`
`status`	`review`
`generated`	by `process:settle-candidates` on `2026-10-28`
`trust`	unverified — no one has confirmed this page's content
`sources`	1 — `emmanuel-ayedoun-2018`

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