CROSS‐SECTIONAL VERSUS LONGITUDINAL DATA: AN EMPIRICAL COMPARISON OF MEAN DIFFERENCES IN ACADEMIC GROWTH

A general model for the study of developmental problems.

1965 • 1,048 citations

34,000 Pupils and How They Grew

1963 • 24 citations

PERSONAL BACKGROUND, EXPERIENCE AND SCHOOL ACHIEVEMENT: AN INVESTIGATION OF THE CONTRIBUTION OF QUESTIONNAIRE DATA TO ACADEMIC PREDICTION¹

1967 • 23 citations