Measurement of Cognitive Engagement Based on Physiological Data in Collaborative Scenarios
Cognitive engagement is essential for effective learning,particularly within collaborative learning contexts.However,imbalances in cognitive engagement among collaborative learners can result in negative behaviors,such as"free-riding".Additionally,precisely measuring cognitive engagement remains a challenge due to its implicit nature.Advances in physiological data collection technologies offer a promising approach to reveal the"black box"of cognitive engagement measurement in collaborative settings.This study conceptualizes cognitive engagement in collaborative scenarios through two dimensions:arousal and adaptability.A total of 184 university students participated in a collaborative task called"Sponge Campus Design",during which portable physiological devices were used to collect skin conductance and heart rate data.The goal was to develop a measurement model of cognitive engagement in collaborative learning contexts.Results indicate that sympathetic nervous system activity effectively reflects arousal levels,while parasympathetic nervous system activity serves as a more accurate measures of adaptation.Using signal processing and feature engi-neering techniques,the study identified 15 features across time-domain,frequency-domain,and morphological levels of the physio-logical data.Principal component regression analysis revealed that this feature set accounted for 39.7％of the variance in cognitive engagement,demonstrating strong reliability and validity of the measurement model.Adaptation,representing the directionality of cog-nitive engagement in collaborative tasks,was found to have greater educational value than arousal.During the collaborative process,learners'arousal levels followed a decreasing-then-increasing trend,while adaptation consistently improved.This study contributes to the theory of cognitive engagement,provides teachers with a deeper understand of student learning,and offers insights for enhancing collaborative learning outcomes.
万方数据
维普
