Marsh H W
Faculty of education, University of Western Sydney, Campbelltown, New South Wales, Australia.
Res Q Exerc Sport. 1996 Sep;67(3):249-64. doi: 10.1080/02701367.1996.10607952.
The Physical Self-Description Questionnaire (PSDQ) is a multidimensional, physical self-concept instrument designed to measure 11 scales: Strength, Body Fat, Activity, Endurance/Fitness, Sports Competence, Coordination, Health, Appearance, Flexibility, Global Physical Self-concept, and Global Esteem. High school students completed the PSDQ on four occasions over a 14-month period. Across the 11 PSDQ scales, the internal consistency at each occasion was good (median alpha = .92) and the stability over time varied from median r = .83 for a 3-month period to median r = .69 for the 14-month period. The data were used to demonstrate the application of confirmatory factor-analysis models of multitrait-multimethod (MTMM) data (with occasions as the multiple methods), which supported the discriminant validity of the PSDQ scales. Augmented MTMM models that included two field tests of cardiovascular endurance provided additional support for the construct validity of PSDQ responses and interpretation of the MTMM models. These results contribute to the growing body of support for the construct validity of physical-self-concept responses and illustrate the application of CFA MTMM models.
身体自我描述问卷（PSDQ）是一种多维的身体自我概念测量工具，旨在测量11个量表：力量、体脂、活动、耐力/体能、运动能力、协调性、健康、外貌、柔韧性、整体身体自我概念和整体自尊。高中生在14个月的时间里分四次完成了PSDQ问卷。在PSDQ的11个量表中，每次测量的内部一致性都很好（中位数阿尔法系数=.92），随着时间推移的稳定性有所不同，3个月期间的中位数相关系数r=.83，14个月期间的中位数相关系数r=.69。这些数据被用于展示多特质多方法（MTMM）数据的验证性因素分析模型（将测量次数作为多种方法）的应用，这支持了PSDQ量表的区分效度。包含两次心血管耐力实地测试的扩展MTMM模型为PSDQ反应的结构效度以及MTMM模型的解释提供了额外支持。这些结果为身体自我概念反应的结构效度提供了越来越多的支持，并说明了CFA MTMM模型的应用。
