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A 9-item locus of control scale was constructed from Levenson's (1974) 24-item locus of control scale. Principal components and second-order factor analyses of responses from 129 undergraduates indicated satisfactory reliability and construct validity of the reduced scale. Structural equation analysis using a scaled measure of perceived risk supported the predictive validity of the reduced scale.
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Sápp et al. (1993) studied this question.
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