Psychometric Properties of the Persian Version of the Pure Procrastination Scale (PPS) in students

Background and objective: The aim of this study was to investigate the psychometric properties of the Persian version of the Pure Procrastination Scale (PPS) including reliability, validity, measurement invariance among demographic variables and exploratory and confirmatory factor analysis. Method: In this cross-sectional study, 390 college students from the three universities in Tehran were asked to fill out a battery of four self-report measures that included PPS, DERS, DASS-21, and SWLS questionnaires. Results: The EFA result showed three factors on this scale. PPS measures three dimensions of procrastination called decisional procrastination, behavioral procrastination, and timeliness. The results of multi-group confirmatory factor analysis showed cross group invariance of the factor structure, measurement weights, structural covariances and measurement residuals of PPS across demographic variables. The results revealed high internal consistency and high test-retest reliability. There were statistically significant correlations between PPS and its subscales and DASS-21, DERS, and SWLS. Conclusion: Overall, PPS showed good reliability and validity in Iranian population and it could be applied for assessing their procrastination.