Using confirmatory factor analysis this study examines the cross-cultural generalizability of the factor structure for the Inventory of School Motivation (ISM), an instrument based on Personal Investment theory. The instrument consists of eight different scales with 43 survey items (ranging from 3 to 7 items each) and each reflecting one of eight specific dimensions: task, effort, competition, social power, affiliation, social concern, praise, and token. The factor structure was invariant over large samples of responses by Anglo-Australian (n=2,616), Migrant Australian (n=1,265), Aboriginal Australian (n=906), Hong Kong Chinese (n=697), Navajo (n=1,776), Anglo-American (n=884) and African (n=819) cultural groups of high school students. The results of factorial invariance analysis indicated that the ISM has a stable and reliable factor structure among the 7 cultural groups. Findings also provide evidence that the ISM scales are applicable to students of different cultural backgrounds; meaningful cross-cultural comparisons should use the 43 items in educational settings.
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