This paper describes a study which examined the performance of 48 pairs of 18-month-old twins on the Mental Development Scale of the Bayley Scales of Infant Development to determine whether score differences would be found for the three subgroups of identical, fraternal same-sexed, and fraternal opposite-sexed twins. Of the 96 subjects, 46 (23…

This book is a guide to understanding the development and needs of the child from 0 to 5. There are three sections: General principles of learning and development; infant development and ways of caring for infants; and the preschool child, which concerns the young child's development and proposes teaching and developmental activities. An appendix…

Six- and nine-month-old infants were exposed to contingent or non-contingent perceptual stimulation from a source which was spatially displaced at 60 from the infant's midline. Reliable operant acquisition was observed in the case of the nine-month-old infants, but not in the case of the six-month-old infants whose performance was similar to that…

A method for reading Piaget is presented in this guide, written for practicing teachers who want better understanding of Piaget's writings. An account of a Piagetian experiment is given, followed by a discussion of its theoretical and practical implications. Eight topics are explored: number, measurement, knots, perspectives, coordinates, floating…

Data from a variety of infant intelligence scores make clear that it is not possible to consider (1) that infant intelligence is a measurable, stable and unitary construct, (2) that there is a general g factor easily discernible in infancy, (3) that there is stability of scores both within and across scales, or (4) that there is predictability…

A two-process model of infant visual attention is constructed based on research using the modified Berlyne technique with three- to five-month olds. The length of time an infant fixated a pattern was examined along with what caused him to turn to the pattern at all. The study was based both on a re-examination of previous research and on new…

Investigates the learning abilities of infants, how handicapped children learn, and what types of programs can be used to help handicapped children to learn. (RK)

The study examined cognitive and emotional aspects of development in four infants treated from 10 to 52 months in a reverse isolation environment because of congenital severe combined immunodeficiency disease. Case material is discussed with reference to severe disruption of oral feeding experience, quality of parental involvement, and sensory…

The nature of emotion in mentally retarded people is considered. Recent research and theory suggest that two approaches are applicable to the study of mental retardation: the behavioral tradition, particularly conditioned emotional responding as well as emotional expression and recognition; and recent investigations of emotional development in…

Reviews the research literature on the abilities of infants to categorize visual information on dot patterns; schematic faces; hue; and orientation. (HOD)

Tests the ability of 43 children, ranging in age from 20 months to 40 months, to discriminate between pictures of boys and girls and male and female adults. Compares children who passed this gender-task with those who failed it on three behaviors most often categorized as sex-typed: toy choice, aggression, and peer playmate selection. (HOD)

Research on cognitive development of low-birthweight infants is reviewed. The study of high-risk populatons should include measures of psychological development. Detailed assessment of the children's daily life and behavior patterns can provide clues for causal linkages to account for the association between social economic status and cognitive…

Do stage-related patterns of early cognitive development reported for normally developing children also characterize at-risk and handicapped children when mental age organization of data is used? Mental age predicted Piagetian-based cognitive levels one to three but did not predict highest-level symbolic functioning in 95 handicapped children.…

Arguing that evolution designed us to both teach and learn, this book explains how, and how much, babies and young children know and learn, and how much parents naturally teach them. The chapters are: (1) "Ancient Questions and a Young Science," including the concept of brain as computer, and the developmental science of Piaget and…

The first 5 years of a child's life are a time of tremendous physical, emotional, social, and cognitive growth. Noting that research shows that children are more likely to succeed in learning when their families actively support them, this booklet is intended for families and caregivers who want to help their preschool children learn and develop…