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Groenendaal, H. A.; Bakker, D. J. – Human Development, 1971
Thirty 7-year-old and 26 10-year-old boys were presented with temporal sequences of meaningful and meaningless figures to determine the differences in perception and retention of above- and below-average readers. (Author/AJ)
Descriptors: Mediation Theory, Perceptual Development, Primary Education, Reading Development

Kendler, Tracy S. – Human Development, 1979
This review argues that an hypothesis about longitudinal development may be derived from, and tested exclusively by, cross-sectional data, when the potential sources of interpretive errors are dealt with adequately. The argument is illustrated by cross-sectional data relevant to developmental mediation theory. (Author/SS)
Descriptors: Cross Sectional Studies, Discrimination Learning, Longitudinal Studies, Mediation Theory