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Title: Speech analysis of teaching assistant interventions in small group collaborative problem solving with undergraduate engineering students
Abstract

This descriptive study focuses on using voice activity detection (VAD) algorithms to extract student speech data in order to better understand the collaboration of small group work and the impact of teaching assistant (TA) interventions in undergraduate engineering discussion sections. Audio data were recorded from individual students wearing head‐mounted noise‐cancelling microphones. Video data of each student group were manually coded for collaborative behaviours (eg, group task relatedness, group verbal interaction and group talk content) of students and TA–student interactions. The analysis includes information about the turn taking, overall speech duration patterns and amounts of overlapping speech observed both when TAs were intervening with groups and when they were not. We found that TAs very rarely provided explicit support regarding collaboration. Key speech metrics, such as amount of turn overlap and maximum turn duration, revealed important information about the nature of student small group discussions and TA interventions. TA interactions during small group collaboration are complex and require nuanced treatments when considering the design of supportive tools.

 
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NSF-PAR ID:
10493524
Author(s) / Creator(s):
 ;  
Publisher / Repository:
Wiley-Blackwell
Date Published:
Journal Name:
British Journal of Educational Technology
ISSN:
0007-1013
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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  5. Abstract

    Capturing evidence for dynamic changes in self‐regulated learning (SRL) behaviours resulting from interventions is challenging for researchers. In the current study, we identified students who were likely to do poorly in a biology course and those who were likely to do well. Then, we randomly assigned a portion of the students predicted to perform poorly to a science of learning to learn intervention where they were taught SRL study strategies. Learning outcome and log data (257 K events) were collected fromn = 226 students. We used a complex systems framework to model the differences in SRL including the amount, interrelatedness, density and regularity of engagement captured in digital trace data (ie, logs). Differences were compared between students who were predicted to (1) perform poorly (control,n = 48), (2) perform poorly and received intervention (treatment,n = 95) and (3) perform well (not flagged,n = 83). Results indicated that the regularity of students' engagement was predictive of course grade, and that the intervention group exhibited increased regularity in engagement over the control group immediately after the intervention and maintained that increase over the course of the semester. We discuss the implications of these findings in relation to the future of artificial intelligence and potential uses for monitoring student learning in online environments.

    Practitioner notes

    What is already known about this topic

    Self‐regulated learning (SRL) knowledge and skills are strong predictors of postsecondary STEM student success.

    SRL is a dynamic, temporal process that leads to purposeful student engagement.

    Methods and metrics for measuring dynamic SRL behaviours in learning contexts are needed.

    What this paper adds

    A Markov process for measuring dynamic SRL processes using log data.

    Evidence that dynamic, interaction‐dominant aspects of SRL predict student achievement.

    Evidence that SRL processes can be meaningfully impacted through educational intervention.

    Implications for theory and practice

    Complexity approaches inform theory and measurement of dynamic SRL processes.

    Static representations of dynamic SRL processes are promising learning analytics metrics.

    Engineered features of LMS usage are valuable contributions to AI models.

     
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