TBLT-Agent

Generative AI as a
Task Interlocutor

Even within the same task, how AI interacts can shape learners’ participation and language use.

SAME TASK · DIFFERENT ROLE

ROLE 01DOMINANTAI-led interaction
AIVOICE
ROLE 02COLLABORATIVEShared interaction

01 · THE STUDY

Beyond what AI says,
we focus on how it relates.

Collaborative peer interaction is a core foundation of task-based language learning. This study views generative AI not simply as a response tool but as a Task Interlocutor, examining how its interactional role influences task performance and L2 learning among Korean elementary EFL learners.

02 · RESEARCH QUESTIONS

Two questions
guiding our study

RQ 01

GenAI as a task interlocutor

How can generative AI support learners’ active task engagement during interactional tasks?

RQ 02

Differences across AI roles

How do different AI interactional roles affect elementary EFL learners’ task performance and language development?

03 · INTERACTIONAL ROLES

One AI,
two ways of interacting

Drawing on Storch’s pair dynamics model, we operationalized two distinct roles for conversational AI.

CONDITION A01

Dominant AI

A condition in which AI leads the interaction

LEARNERAI
CONDITION B02

Collaborative AI

A condition in which learners and AI co-construct the interaction

LEARNERAI

04 · WHAT WE MEASURE

Interaction patterns
and changes in learning

TASK PERFORMANCE

TurnsTotal number of turns
WordsMean words per turn
TopicsTopic initiation frequency

LEARNING OUTCOMES

QuestionsAccuracy of question formation
SuggestionsAccuracy of suggestion speech acts
Pretest - Posttest production accuracy

05 · NEXT PHASE · 2026 FALL

Fall semester extension

From learner–AI dialogue
to AI-mediated peer collaboration.

Building on the interactional role designs developed in the current study, the next phase will investigate how AI mediates collaboration between two learners.

NOW · SPRING SEMESTER
H↔AI

Human-AI Interaction

How dominant and collaborative roles affect task performance and L2 learning

NEXT · FALL SEMESTER
H↔H+AI

AI-Mediated Peer Interaction

How AI mediates collaboration in a group of two learners and one AI agent