268 students (M age = 20.0 yr., DS = 4.4; 68% women), randomly chosen from psychology classes, completed Rotter's I-E scale and Pettijohn's 1992 locus of control scale for class demonstration. The two sets of scores were similar but examination of reliability and validity indicated the latter was best used as a demonstration.
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References
1.
PettijohnT. F. (1992) Teaching and testing from psychology: A concise introduction. (3rd ed.) Guilford, CT: The Dushkin Publishing Group.
2.
RotterJ. (1966) Generalized expectancies for internal versus external control of reinforcements. Psychological Monographs, 80, No. 1 (Whole No. 609).
