In a study to identify brief forms of the Multidimensional Aptitude Battery (MAB), 30 samples of approximately 250 respondents each were drawn from a population of 4,928 adolescents to evaluate by replicated multivariate regression analyses the best combinations of scales for predicting MAB total scores. MAB subscales measuring Comprehension, Similarities, Digit Symbol, and Spatial were recommended as the best combination for predicting MAB total scores. Advantages and limitations of abbreviated scales are discussed. (Author)