The purpose of the study was to develop a predictive equation for estimating performance in the basic course in methods of psychological research from scores on the Differential Aptitude Test reasoning scales and on the Davis Reading Test, from measures of attitudes toward issues in psychology, and from self-ratings of abilities and of expected course grade. Results showed a significant multiple correlation between performance and each of the several predictors, especially test and attitude scores. The regression equation was used to predict successfully grades earned in course sections not in the original sample.
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