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Vol.12, No.3, 279 ~ 289, 2009
Title
The Impact of Cognitive Load Factors and Arousal Levels of Galvanic Skin Response on Task Performance in Computer Based Learning
 
Abstract
The purpose of this study was to verify the impact of cognitive factors and GSR on the task performance. For this study 64 students participated. Multiple regression and repeated measures were applied to analyze the data. The result for the survey indicated that previous knowledge, physical efforts, and task difficulty had significant impacts on task performance. Particularly, task difficulty has a negative impact. This can be interpreted as someone who has high prior knowledge inputs higher physical efforts with low task difficulty perception will show high performance. On the other hand, the low arousal level of GSR in the evaluation stage is a prediction variable of task performance. This result shows that high prior knowledge and low arousal level of GSR produces high performance. However, the analysis of difference in GSR between learning and evaluation stages does not show significant difference. It suggests that physiological measure such as GSR is reliable index of cognitive load; however, it partially represents cognitive load. Other crucial factors should be added for comprehensive measures.
Key Words
인지부하의 측정, 전기피부반응, 생리신호, 인지부하의 주관적 설문척도, measures of cognitive Load, galvanic skin response, GSR, physiological signal, subject scale
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