The Japanese Journal of Personality
Online ISSN : 1349-6174
Print ISSN : 1348-8406
ISSN-L : 1348-8406
Original Article
Examination of the Reliability and Validity of the Japanese version of the Pure Procrastination Scale
Yasunori KanekoHiroto IkedaYuma FujishimaAyumi UmedaMana OguchiEriko Takahashi
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2022 Volume 31 Issue 1 Pages 1-11


The purpose of this study was to develop a Japanese version of the Pure Procrastination Scale (PPS-J), and examine its reliability and validity. The original version of the scale was developed to measure procrastination, a phenomenon that involves a voluntary delay of an intended course of action despite expecting to be worse off for doing so. In this study, a confirmatory factor analysis was conducted on 195 university students. The scale has a 12-item, three-factor structure consisting of “implemental procrastination,” “decisional procrastination,” and “untimeliness.” It was confirmed that it had sufficient internal consistency and construct validity. It was also shown to have acceptable retest reliability in a study of 57 university students. A daily life survey of 44 university students showed the substantial construct validity of the PPS-J. Overall, the results suggest that the PPS-J is a valid scale for measuring procrastination.

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