Introducing a Short Version of the Physical Self Description Questionnaire: New Strategies, Short-Form Evaluative Criteria, and Applications of Factor Analyses

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Herbert W. Marsh Oxford University

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Andrew J. Martin University of Sydney

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Susan Jackson University of Queensland

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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.

Herbert W. Marsh is with the Department of Education, Oxford University, Oxford, U.K. Andrew J. Martin is with the Faculty of Education and Social Work, University of Sydney, Sydney, NSW, Australia. Susan Jackson is with the School of Human Movement Studies, University of Queensland, St. Lucia, QLD, Australia.

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