The purpose of this analysis is to provide an estimate of the mean correlation of home environment measures with learning measures across studies and to indicate sample and study characteristics associated with different magnitudes of correlation. University of Chicago studies of behavioral processes and British investigations of parental…

This paper reviews methods which have been used to identify and validate learning hierarchies. Specifically, three methods which reflect the notion of a relatively inviolate sequence are discussed and compared. Two of the psychometric methods compare pairs of skills, the ordering-theoretic method (Bart and Krus) and the test of inclusion (White…