Using the differential aptitude test to estimate intelligence and scholastic achievement at grade nine level

Abstract

The newly developed Differential Aptitude Test Form S (DAT) does not give an indication of general intelligence or expected achievement in Grade 9. The aim of the current study was to determine the relationships of the aptitude subtests (measured by the DAT) with intelligence and achievement. Two affective factors, motivation and self-concept, as well as study orientation, were included as variables predicting achievement. An empirical study was carried out in which 60 Grade 9 learners were tested. The variables were measured using reliable instruments. Correlations were calculated and multiple regression analyses used to predict achievement. Moderate to high positive correlations between aptitude and intelligence were found. Affective factors explained more of the variance in achievement in key subjects than aptitude variables. One conclusion is that Grade 9 achievement measures affective rather than cognitive factors. Recommendations are made regarding the use of the DAT-S in predicting school achievement.