Many studies of school achievement find a significant association between reading and arithmetic achievement. The magnitude of the association varies widely across the studies, but the sources of this variation have not been identified. The purpose of this paper is to examine the magnitude and determinants of the relation between arithmetic and…

Several cognitive deficits associated with reading and mathematics problems have been identified. However, only few studies assessed the impact of these variables in children with combined problems in reading and arithmetics, and none of these studies included children with low IQ. This longitudinal study was designed to assess the impact of…

Aim: Subcortical band heterotopia (SBH) or "double cortex" is a malformation of cortical development resulting from impaired neuronal migration. So far, research has focused on the neurological, neuroimaging, and genetic correlates of SBH. More recently, clinical reports and small sample studies have documented neuropsychological dysfunction in…

Prekindergarten children were given a perceptual discrimination task using letterlike forms and their transformations. The magnitude of the relation to subsequent achievement in reading varied according to the difficulty of a transformation. More easily discriminated transformations were associated with higher correlations. Patterns were similar…

This monograph contains the 24 papers presented to the Third Annual UAP (University Affiliated Program) Conference on "Piagetian Theory: The Helping Professions and the School Age Child." Dr. Mary Ann Pulaski gave the major morning address on "The Importance of Ludi Symbolism (Make Believe Play) in Cognitive Development." The…