1. The Validity of Two Temperament Scales in Predicting Student Achievement in Introductory Psychology
2. Bendig, A. W., and Klugh, H. E. “A Validation of Gough’s Hr Scale in Predicting Academic Achievement,” unpublished study.
3. The Guilford Zimmerman Temperament Survey as a predictor of achievement level and achievement fluctuation in introductory psychology.
4. Klugh, H. E. The Prediction of Academic Achievement from Measures of Personality, unpublished Master’s Thesis, University of Pittsburgh, 1952.