Introducing a short version of the physical self description questionnaire: new strategies, short-form evaluative criteria, and applications of factor analyses.
Based on the Physical Self Description Questionnaire (PSDQ) normative archive (n = 1,607 Australian adolescents), 40 of 70 items were selected to construct a new short form (PSDQ-S). The PSDQ-S was evaluated in a new cross-validation sample of 708 Australian adolescents and four additional samples: 349 Australian elite-athlete adolescents, 986 Spanish adolescents, 395 Israeli university students, 760 Australian older adults. Across these six groups, the 11 PSDQ-S factors had consistently high reliabilities and invariant factor structures. Study 1, using a missing-by-design variation of multigroup invariance tests, showed invariance across 40 PSDQ-S items and 70 PSDQ items. Study 2 demonstrated factorial invariance over a 1-year interval (test-retest correlations .57-.90; Mdn = .77), and good convergent and discriminant validity in relation to time. Study 3 showed good and nearly identical support for convergent and discriminant validity of PSDQ and PSDQ-S responses in relation to two other physical self-concept instruments.
Marsh
Herbert W
HW
Department of Education, Oxford University, Oxford, UK.
Martin
Andrew J
AJ
Jackson
Susan
S
D000293:Adolescent; D001315:Australia; D001828:Body Image; D002648:Child; D015444:Exercise / Q000523:psychology; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D007557:Israel; D008137:Longitudinal Studies; D008297:Male; D010809:Physical Fitness; D011581:Psychological Tests; D011594:Psychometrics; D015203:Reproducibility of Results; D012649:Self Concept; D013030:Spain; D013177:Sports / Q000523:psychology; D011795:Surveys and Questionnaires