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This study presents construct validity evidence for a brief self report form of the Nowicki-Strickland Preschool and Primary Internal-External control scale (PPNSIE). The 13 item scale was completed by 376 first and second graders. Based on a series of analyses, this brief self report scale appeared to have a factor structure similar to that of the PPNSIE as well as comparable reliability, item characteristics, and relation to achievement.
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Nowicki et al. (1989) studied this question.
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