English validation of the short form of the Physical Self-Inventory (PSI-S) |
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| Affiliation: | 1. Institute for Positive Psychology and Education, Australian Catholic University, Australia;2. Cyberpsychology Laboratory, Department of Psychoeducation and Psychology, Université du Québec en Outaouais (UQO), Canada;3. Western Sydney University, Australia;4. Aix Marseille Univ, CNRS, ISM, Inst Movement Sci, Marseille, France;1. Faculty of Kinesiology and Physical Education, University of Toronto, Canada;2. Department of Kinesiology, The Pennsylvania State University, University Park, PA, United States;3. Department of Preventive Medicine, Northwestern University, Chicago, IL, United States;1. Department of Psychology, Southern Methodist University, Dallas, TX, USA;2. Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, RI, USA;1. Complex Systems in Sport Research Group, INEFC Barcelona University, Avda. De l’Estadi, 12-22, 08038 Barcelona, Spain;2. EUSES, University of Girona, Carrer de Francesc Macia, 65, 17190 Salt, Spain;3. West Chester University, 700 S. High St, West Chester, PA 19382, USA;4. Univ. St. Cyril and Methodius, Zeleznicka BB, 1000 Skopje, The Former Yugoslav Republic of Macedonia;5. Florida State University, 600 W. College Avenue, Tallahassee, FL 32306, USA;1. School of Human and Health Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK;2. Sport Programme, School of Applied Social Sciences, Durham University, 42 Old Elvet, Durham, DH1 3HN, UK;3. Department of Psychology, Florida State University, Tallahassee, FL, 32306-4301, USA;1. Movement Science – Skill Acquisition, Australian Institute of Sport, Canberra, Australia;2. School of Health and Sport Sciences, University of the Sunshine Coast, Sippy Downs, Australia;3. College of Sport and Exercise Science, Institute of Sport, Exercise and Active Living, Victoria University, Melbourne, Australia |
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| 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. |
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| Keywords: | Physical self-concept Physical self-inventory Short form Exploratory structural equation modeling ESEM English |
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