Experimental study of evaluating graphical CRT displays in process plants based on operator's thinking process

Abstract

Kobayashi et al. (1996) have proposed an evaluation technique (Mental Algorithm Analysis) for graphical CRT displays in process plants based on the operator's thinking process. In this study, simulation exercises were performed to evaluate three types of display based on the subjects' verbal protocols using Mental Algorithm Analysis. The three types of display included a different number of indicators in their mimic pictures. To verify the evaluation results, these displays were also evaluated using distributions of fixed duration eye movements of the subjects. A comparison of the evaluation results revealed that the technique of Mental Algorithm Analysis was pertinent to evaluation based on the operator's thinking process.