Twenty-two mothers whose physiologic responses to infant signals had been recorded at an earlier date were videotaped with their infants during a feeding session when the infant was 9 months of age. Infants' development of the object concept was assessed at 15 months. (JMB)

The relationship between performance on a Piaget-based infant scale and adaptive behavior was assessed for 25 developmentally disabled infants and preschool children. (Author)

The development of the concept of object permanence was investigated with eight infants with cleft lip/palate and four nonimpaired infants. Superior performance of the cleft lip/palate group was found, possibly due to increased environmental stimulation provided by parents. (DB)

Comparison of canonical (well-formed syllabic) babbling in 36 prelinguistic retarded children (17 to 62 months of age) with nonretarded children indicated a low correlation between babbling and developmental age suggesting substantial independence between cognitive development and babbling among retarded children. (Author/DB)

Comparisons of age and test score correlations, comparisons of cross-sequential means, and trends of means for diagnostic subgroups and normal controls suggest developmental delay for all measured skills at all ages for autistic and schizophrenic children. Findings also suggest a trend for steady prepubertal cognitive skill development, followed…

The low predictive validity of infant tests is discussed in light of current issues in developmental psychology. Considers continuity and discontinuity in the development of early cognitive competence, intellectual heterogeneity problems, and individual-environment transactions. Provides suggestions for increasing predictive validity and indicates…

Investigated were J. Piaget's ideas of the sensory motor stage of intelligence by determining whether six developmentally delayed children (aged 21 to 31 months) could use two different strategies appropriately to look for two different tokens. (Author/DB)

Following nutritional recovery from severe protein-calorie deficiency, 20 young children evidenced a retarded level of categorization behavior compared to a control group of 19 adequately nourished children from similar socioeconomic background. (NH)

Thirty-two mother/infant dyads were randomly assigned to groups provided with routine well-child care and to discussions of either infant social development (intervention treatment) or accident prevention and nutrition (control). Findings revealed more sensitivity, cooperativeness, appropriateness of interaction, and appropriateness of play in the…

Argues that in analyzing effects of early experience on development of cognitive competence, theoretical analyses as well as empirical investigations should be based on a transactional model of development. Shows optimal stimulation hypothesis, particularly the enhancement prediction, seems to represent a transactional approach to the study of…

Investigates the predictability of cognitive differences at 12 months from infant and maternal behaviors at 4 months. Overall, the results show that some individual differences in cognition may be predictable across the first year of life. (Author/RH)

The Home Observation for Measurement of the Environment (HOME) underwent a generalizability study examining the consistency and stability of scores. Canonical correlation and principal components factor analysis indicated that the organization of environment changes over the first two years of life, and the amount--not type--of stimulation is…

Longitudinal data gathered on 24 children at 51 months of age and at earlier ages suggest that children currently characterized as faster habituators, in terms of first fixation data, may be somewhat advanced cognitively compared to slower habituators. (Author/DB)

Critically evaluates habituation and related models for studying infant memory, focusing on methodological and substantive limitations which restrict the derivation of information from them. The essay considers existing research on the development of object permanence as an alternative source of information about infant memory. (Author/DB)