Regression formula to predict educational ages from revised Alpha scores

Abstract

Revised Alpha examination, form 5, and the New Stanford achievement test, form W, had been administered to 2000 adult male inmates of the U. S. Penitentiary at Fort Leavenworth. The correlation between the 2 tests was .87. The regression equation predicting educational age from Alpha score was computed and a conversion table constructed. The average predicted educational age was overestimated by less than half a month. (PsycInfo Database Record (c) 2025 APA, all rights reserved)