A Longitudinal Investigation of the Intellectual Differentiation Hypothesis

The Nature of Human Intelligence

1968 • 4,576 citations

The factorial structure of the WISC at ages 7-6, 10-6, and 13-6.

1959 • 362 citations

A developmental theory of intelligence.

1946 • 272 citations

A Longitudinal Investigation of Change in the Factorial Composition of Intelligence with Age in Young School Children

1967 • 65 citations

The structure of abilities at the preschool ages: Hypothesized domains.

1960 • 30 citations

The Stability Of The Wisc Factor Structure At Three Age Levels

1967 • 7 citations