A validity study is presented in which GRE scores, undergraduate grades and age are used to predict first semester grades in graduate school in a college of education. Results suggest that age interacts with other variables in the predictor set to produce underpredictions for older students with low to moderate entering credentials. Conversely, grades tend to be underpredicted for younger students with high credentials. Further, three instances of reciprocal suppression are cited in which age is involved. As such, the complex relationship between age and other variables should not be ignored in validity studies dealing with graduate students entering the field of education.
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References
1.
Cohen, J. and Cohen, P. (1975). Applied multiple regression/correlation analysis for the behavioral sciences. Hillsdale, NJ: Lawrence Erlbaum Associates, Publishers.
2.
Conger, A. J. (1974). A revised definition for suppressor variables: A guide to their identification and interpretation. Educational and Psychological Measurement, 34, 35-46.
3.
Conger, A. J. and Jackson, D. N. (1972). Suppressor variables, prediction and the interpretation of psychological relationships. Educational and Psychological Measurement, 32, 579-599.
4.
Educational Testing Service . (1948-1990). Graduate Record Examination. Princeton, NJ: Author.
5.
House, J. D. (1989). Age bias in prediction of graduate grade point average from Graduate Record Examination scores. Educational and Psychological Measurement, 49, 663-666.
6.
McNemar, Q. (1945). The mode of operation of suppressant variables. American Journal of Psychology, 58, 554-555.
7.
Stricker, L. J. and Rock, D. A. (1987). Factor structure of the GRE General Test in young and middle adulthood. Developmental Psychology, 23, 526-536.
