PROJECT ON APTITUDES OF HIGH-LEVEL PERSONNEL.
UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES
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This project sought to establish the existence of separable intellectual abilities. The typical study began nn with the formulation of hypotheses as to the nature of certain abilities. Known tests were used or modified, and many new tests were developed as measures of the hypothesized abilities. The resulting test battery was administered to a sample of young adult males, usually military officer candidates. The sample sizes ranged from approximately 200 to 450 for different studies. Scores from the tests were intercorrelated, and the correlations factor-analyzed. Centroid factors were rotated orthogonally to maximize simple structure, positive manifold, and psychological interpretability.