University of Worcester Worcester Research and Publications

Evaluating Validity and Test–retest Reliability in Four Drive for Muscularity Questionnaires

Tod , D and Morrison, T.G and Edwards, Christian (2012) Evaluating Validity and Test–retest Reliability in Four Drive for Muscularity Questionnaires. Body Image, 9 (3). pp. 425-428. ISSN 1740-1445

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The current study assessed relationships among four commonly used drive for muscularity questionnaires, along with their 7 and 14 day test–retest reliability. Sample 1 was comprised of young British adult males (N = 272; MAGE = 20.3) who completed the questionnaires once. Sample 2, a group of young British adult males (N = 54, MAGE = 19.3), completed the questionnaires three times spaced 7 and 14 days apart. Correlations among Sample 1 ranged from .20 to .82 providing evidence for concurrent and discriminant validities. Evidence for test–retest reliability emerged with intraclass correlations ranging from .78 to .95 (p < .001) and generally nonsignificant t-tests (p > .05). Overall, the data support the psychometric properties of the drive for muscularity inventories; however, the shared variance (35–67%) hints that refinement is possible.

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Uncontrolled Keywords: Drive for muscularity, Body image, Psychometrics,Concurrent validity, Discriminant validity, Test–retest reliability
Subjects: H Social Sciences > H Social Sciences (General)
Divisions: Academic Departments > Institute of Sport and Exercise Science
Depositing User: Christian Edwards
Date Deposited: 28 Sep 2012 09:27
Last Modified: 28 Sep 2012 10:52

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