Similarity in Developmental Profile among Related Pairs of Human Infants

Some Theorems on Quadratic Forms Applied in the Study of Analysis of Variance Problems, II. Effects of Inequality of Variance and of Correlation Between Errors in the Two-Way Classification

1954 • 560 citations

Transitions in infant sensorimotor development and the prediction of childhood IQ.

1972 • 296 citations

Twins: Early Mental Development

1972 • 65 citations

Intelligence Quotient Pattern over Age: Comparisons among Siblings and Parent-Child Pairs

1970 • 34 citations