次任务法脑力负荷度量实验的分析与改进

Analysis and improvement of mental workload measurement experiment based on subsidiary task technique

在人因工程的实验课程教学中常采用次任务法对脑力负荷进行度量,发现原实验方案的次任务设计不当,次任务对主任务形成干扰,导致次任务绩效与主任务脑力负荷之间的关系与相关理论存在较大矛盾。对该实验方案进行改进,增加被试实验前的自我检查和培训环节,设计了新的次任务,使实验效果更客观。

The subsidiary task technique is often used to measure mental workload in ergonomics course teaching .Because of the poorly designed subsidiary task and the interference between primary task and subsidiary task , the relationship between the subsidiary task performance and the primary task mental workload is incompatible with the theory .The improved experimental scheme is put up ,which can improve the experimental results .