Development of a Short Form of the Workload Sensitivity Questionnaire

Abstract

The 38-item Workload Sensitivity Questionnaire (WSQ38) was originally designed for general drivers. In this study, we attempted to create a shortened version for senior drivers. As a result of analysis using latent rank theory, we were able to classify the items into three groups of ranks according to the degree of subjective workload. A shortened form was proposed and validated using the top items with the highest item discriminancy. It became clear that about 10 to 9 items were sufficient to measure the degree of driving workload (WSQ9 or WSQ10).