Applying CPM-GOMS to Analyze Mental Tasks of the Advanced Main Control Room

GOMS techniques produce quantitative and qualitative predictions of how people will use a proposed system, though the different versions have different emphases. All of the techniques can speak to the coverage of the functionality of a system and all provide estimates of task performance time. This study aimed for analyze the tasks that operators deal with in the main control room of advanced nuclear power plant, and most of the tasks need high mental activity. The mental tasks would overlap and be dealt with at the same time, namely, most of them can be assumed highly parallel in nature. Therefore, this study would prefer the CPM-GOMS to be the basic pattern for developing the mental task analysis for digital work environment. A within-subjects experiment design has been conducted to examine the validity of the modified CPM-GOM. Thirty subjects participated in two task types included high and low compatible type. The results indicated the performance criteria of high compatible task type was significantly higher than that of low compatible task type, that is, the modified CPM-GOMS could distinguish the difference between high and low compatible mental tasks definitely