The purpose of this study was to develop a semantic differential scale based on achievement motivation concepts by which grade point averages could be predicted. A scale was constructed and administered to 944 freshmen at Northeastern State College in Fall 1967. Two approaches were used. One was to combine semantic differential scale scores derived from motivation concepts with aptitude scores into a general multiple regression equation. The other was to hold the academic aptitude constant and apply the semantic differential scale scores to students of equal ability. In this approach, a separate multiple regression equation is necessary for each academic aptitude level. Students were grouped according to their academic aptitude and sex. Multiple correlations between grades and semantic differential scale scores which were significant at or above the .05 level of confidence were found for each group of subjects. The conclusions were that the semantic differential technique constructed from achievement motivation concepts can predict grades but the scale devised here is unsatisfactory for predictive purposes. Through further study and improvement, it could possibly become useful for screening, counseling and admission activities. (Author/JS)