The Development of the Japanese Version of the Plymouth Sensory Imagery Questionnaire (Psi-Q)

Abstract

The QMI (Questionnaire upon Mental Imagery; Betts, 1909; Sheehan, 1967) has been widely used as a multisensory imagery scale to measure the vividness of mental imagery in multiple sensory modalities. However, many problems have been identified in the QMI. To overcome such problems, the Psi-Q (the Plymouth Sensory Imagery Questionnaire; Andrade et al., 2014) has been recently developed. In this study, we developed the Japanese version of the Psi-Q and examined its factorial validity, construct validity, internal consistency, and test–retest reliability. The results of the analysis indicated that the Japanese version of the Psi-Q has a seven-factor structure (vision, sound, smell, taste, touch, body, and emotion) like the original scale. In addition, sufficient construct validity, internal consistency, and test-retest reliability were confirmed. The Japanese version of the Psi-Q is considered to be a multisensory imagery scale that can replace the conventionally used QMI.