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…

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

Investigated the relationship between sex hormones and spatial performance among adolescents treated with sex steroids for delayed puberty. Found that spatial performance varied according to gender but did not vary with levels of actively circulating sex steroids. Reviewed physiological mechanisms, developmental periods, and past empirical work…

Reports four experiments that examined four-year olds' ability to coordinate orthogonal spatial dimensions. Found that performance was particularly good when two imagined lines of sight were the dimensions to be coordinated. Results support the notion that young children perform better when tasks are set in a meaningful context. (MM)

Toddlers show a surprising lack of knowledge about solidity when they are asked to search for a ball that rolled behind a screen and stopped at a barrier whose top was visible above the screen. They search incorrectly, failing to take into account the position of the barrier. This study examined details of this failure by simplifying the task in 2…

Early childhood neglect can limit a child's normal cognitive development and result in behavior problems in the classroom. When normal attachment is disrupted, learning difficulties can result in problems with time awareness. It has also been shown that an awareness of time is a key concept for the formation of organizational and math skills. This…

Empirically describes the relative development of perceptual and conceptual understanding of left-right, back-front, up-down projective relationships between objects and provides a heuristic model of the cognitive processes involved in coordination of perspectives tasks. (Author/ED)

RECENT RESEARCH FINDINGS ON THE PERCEPTUAL DEVELOPMENT OF YOUNG INFANTS WERE SURVEYED, AND THE NEED FOR SYNTHESIZING THESE NEW FINDINGS INTO WORKABLE CONCEPTS WAS SUGGESTED FOR THE FRUITFUL STUDY OF HIGHER ORDER CONSIDERATIONS IN THE FUTURE. A DISCUSSION WAS MADE ON THE DEVELOPMENTAL ISSUES OF--(1) SUPERORDINATE CATEGORIES OF PERCEPTUAL FUNCTION,…

A series of three experiments was conducted to assess the comprehension of four types of cross-modal (synesthetic) similarities in children and adults. Both perceptual and verbal (metaphoric) modes were tested. (PCB)

Author stresses the importance of art, music, and literature experiences in the perceptual development of a child. (GB)

Aesthetic education aims at the creation of the child as a total being in which receptivity to the arts and engagement with them become equal with the demands of the intellect and their recognized disciplines. (Author)

Age and condition (either constancy-relevant or variability-relevant) interact, with the youngest group in the constancy-relevant condition performing most poorly on concept identification tasks. (MH)

The current study examines the relationship between sustained attention and social competence in preschool children. While studies demonstrate that children with attention deficit hyperactivity disorder (ADHD) exhibit poor social competence, less is known about typically developing children. Since children with ADHD have associated behavior…

Despite external changes such as those of magnitudes, the functional properties of the visual system also improve with increased age. According to Jean Piaget's centration/decentration theory, the process of perceptual development might continue until adulthood and even after. However, perceptual development should not be understood in all of its…

Makes the observation that the attempt of the child to make sense of the world is not necessarily guided by traditional literary structures but by expressive tactics influenced, in large part, by what the child is thinking and struggling with at the moment. (HOD)