Children's cognitive and perceptual development is explained in Piagetian stage theory.

Conducted two experiments which employed discrimination learning methods to test predictions related to the difficulty of discrimination of lateral reversals and of inversions when shapes are presented: (1) successively, (2) simultaneously in lateral alignment, and (3) simultaneously in vertical alignment. Subjects were 6-year-old children. (SDH)

Reports a study conducted to assess the knowledge, attitudes and opinions of preschool children concerning a public figure through use of a questionnaire administered orally. (ED)

An examination of the extent to which adults and children (7 and 11 years old) were able to make discriminations between fixations directed at their eyes and at different positions on their faces. (SDH)

Older adults are significantly slower than young adults in the naming response in the Stroop Color Word Interference Test. Hypotheses attempting to explain this age-related difference in a perceptual-cognitive task have included orthogenic principle, response-competition, and cautiousness. This study examines whether there are any significant…

In a study of spatial perspectives, third- and fifth-grade students were asked to coordinate perspectives on single-object and multiple-object arrays. (ST)

The present study was designed to identify sources of information in the human face and to determine how this information is processed by young children in solving problems. (ST)

The author presents an overview of Pascual-Leone's Theory of Constructive Operators, a process-structural theory based upon Piagetian constructs which has evolved to both explain and predict the temporal unfolding of behavior. An application is made of the theory to the demands of a discrete motor task and prediction of (a) the minimal age…

Presents three experiments which investigated: (1) the nature of the processes by which preschool and kindergarten children estimate small numbers; and (2) the generality of the number-relevant versus number-irrelevant categorization scheme in the child's operative thinking about small numbers. (Author/ED)

Research supported by U.S. Public Health Service Grant MH-6415.

THE ASSUMPTION THAT READING DISABILITY CAN RESULT FROM A GAP BETWEEN THE DEVELOPMENTAL MATURITY OF CHILDREN AND THE DEMANDS OF A BEGINNING READING PROGRAM CARRIES WITH IT THE PROBLEM OF ASSESSING DEVELOPMENTAL STATUS. A LONGITUDINAL STUDY CONDUCTED TO DERIVE A METHOD FOR IDENTIFYING SIGNS OF IMMATURITY RELATED TO LATER READING DIFFICULTIES USED…

This paper deals with research on the development of infants' ability to perceive invariant features of things and the relation of objects to both the spatial layout of the infants' environment and to themselves. Basic assumptions regarding the perception of invariance are discussed and a theoretical view of the role of motion in the development…