Prenatal exposure to the Dutch famine of 1944-45 had no detectable effects on the adult mental performance of surviving male offspring; birth weight was not related to mental performance; and the association of social class with mental performance was strong. (AL)

Paper presented at the annual meeting of the American Orthopsychiatric Association (Chicago, 1968).

This ecological study is one part of a broad research effort to understand the backgrounds and characteristics of culturally disadvantaged children. The study attempted to provide empirical data which could be used to describe differences in home environments and behavior of three young children from deprived and non-deprived homes. Focus was on…

Eighty-two children (aged 4 through 6) were administered a Backward Digit Span test to measure M-space (mental capacity) and four conservation tasks: number, substance, continuous quantity and weight. (MS)

A discussion of the assumptions about the composition of intelligence which underlie preschool intervention efforts today offers theoretical evidence of a hierarchical arrangement of learning processes. International studies on cognitive development have concluded that the emergence of symbolic or conceptual thought occurs at a transitional age…

This paper challenges those involved in early childhood education to reexamine unquestioned assumptions concerning the benefits of early schooling. A synergic effect is posited by bringing together research areas that had formerly remained somewhat autonomous: Neurophysiology, vision, hearing, parent attitudes, affective domain, comparative school…

This study is an attempt to identify social interactions which fit into a Piagetian model for cognitive change, and specifically to examine the degree to which the frequency of those interactions predicts the rate of cognitive development. The subjects were 74 elementary school children enrolled in 19 K-4 classrooms. These children were in the…