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Jensen, Arthur R. – 1979
The uses of data on siblings for educational and psychological research purposes are explained. Examples are based on empirical data. Five types of research problems, using sibling data, are explored: (1) statistical control of family background variance in psychological or educational studies which use analysis of covariance (ANCOVA) or multiple…
Descriptors: Age Differences, Analysis of Covariance, Cognitive Measurement, Correlation