Abstract
Research supports a hierarchical factor structure of intelligence that is consistent with the second-order factor model proposed by Gustafsson in which five first-order factors yield a single second-order factor of General Intelligence (g). Gustafsson’s model was tested with structural equation modeling via the Ball Aptitude Battery (BAB), a measure of aptitudes and vocational interests. This study focuses on the tests from the BAB that are believed to measure various aspects of intelligence: Numerical Computation, Numerical Reasoning, Inductive Reasoning, Analytical Reasoning, Paper Folding, Idea Fluency, Idea Generation, Vocabulary, Associative Memory, Auditory Memory, Clerical, and Writing Speed. Results indicate that the factor structure of the BAB is consistent with Gustafsson’s second-order factor model of intelligence. Implications of this finding are discussed.
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