English validation of the short form of the Physical Self-Inventory (PSI-S). (November 2016)

• Record Type: Journal Article
• Authors: Morin, Alexandre J.S.; Maïano, Christophe; White, Rhiannon Lee; Owen, Katherine B.; Tracey, Danielle; Mascret, Nicolas; Lonsdale, Chris
• Is Part Of: Psychology of sport and exercise. Volume 27(2016)
• Page Start: 180
• Page End: 194
• Publication Date: 2016-11
• Subjects: Physical self-concept -- Physical self-inventory -- Short form -- Exploratory structural equation modeling -- ESEM -- English; Sports -- Psychological aspects -- Periodicals; Exercise -- Psychological aspects -- Periodicals; Psychology -- Periodicals; Sports -- Periodicals; Exercise -- Periodicals; Societies, Medical -- Periodicals; Psychology; Sports; Exercise; Societies, Medical; Sports -- Aspect psychologique -- Périodiques; Exercice -- Aspect psychologique -- Périodiques; 613.71019
• DOI: 10.1016/j.psychsport.2016.08.016
• Languages: English
• ISSNs: 1469-0292

Abstract

Abstract: The study examined the psychometric properties of scores on the English version of the short Physical Self-Inventory (PSI-S) among 1368 English-Speaking and 224 French-Speaking adolescents. Participants completed the original PSI-S and a revised version including positively-worded reformulations of the original negatively-worded items. The results supported the a priori factor structure, composite reliability, and test-retest reliability (7–8 months) of scores on the revised PSI-S, and its equivalence with the French version. Compared to confirmatory factor analyses, exploratory structural equation modeling resulted in a superior solution, and more cleanly differentiated factors. PSI-S responses were longitudinally invariant across 7–8 months, and presented no evidence of differential item functioning as a function of age, gender, body mass index (BMI) and physical activity. The results showed latent mean differences as a function of gender, BMI (linear and curvilinear effects), and physical activity, supporting the criterion-related validity of the PSI-S factors. Highlights: We assess the psychometric properties of a revised Physical Self Inventory-Short (PSI-S). This assessment relies on Exploratory Structural Equation Modeling (ESEM). Results support the psychometric properties of the English and French versions. Ratings were longitudinally invariant across 7–8 months. We found no differential item functioning (age, gender, BMI and physical activity).