Studying normal infant development is a challenge for cognitive scientists in general and for neuroscientists in particular because: (1) physiological indices of infant cognition are generally noisy and technically difficult to obtain; and (2) interindividual variability and a paucity of established results make data interpretation very complex,…

Previous research on infant swimming has reported contradictory findings. Cross-sectional observations revealed a disorganized phase between about 3 and 12 months, which was attributed to "cortical inhibition" and implied slow learning (McGraw, 1939). However, training with a single infant during this period revealed rapid acquisition (McGraw,…

The conferencee discussions and papers presented in this volume reflect the opinions and research of 20 authorities in the field of communication development. These authorities offer new perspectives on nonverbal communication, speech reception and production, and the development of language and thought. To provide a better understanding of…

This demonstration study examines the affective reactions of infants when they imitate or fail to imitate play behavior modeled by an adult. Subjects were twenty-four 18-month-old and twenty-four 24-month-old male and female infants. Each infant visited the laboratory twice with an inter-session interval of 48 hours. At each session, the infant…

This volume consists of reports of individual studies and surveys of research work on mother-infant interactions. It is divided into two parts. The first section presents a wide range of studies on mother-infant relations as exhibited in the behavior of animals. The second part, concerning human behavior, includes studies on the natural history of…

Several sets of evidence are offered to support the hypothesis that cognitive and social development are intimately interrelated, and that mother-infant interaction influences both. A mother's prompt responsiveness to her baby's signals tends to foster the development of varied and clear modes of communication and thus the development of one facet…

The report summarizes the first year of the Toddler Research and Intervention Project, a research program to devise and evaluate different aspects of educational intervention with children, ages 1-4 years, with moderate to severe development problems (primarily mental retardation). Described are the children who composed the intervention group,…

Reviews different approaches used over the past two decades to study early behavioral development in infants. Reviews research in areas as physical and cognitive development and the role of adult caretakers. (BD)

This study examined behavioral development during the first year of life of 41 infants diagnosed with cerebral palsy, hypotonia, or hypertonia. The KID Scale, an empirically normed, caregiver-report inventory which covers behavior in five domains (cognitive, motor, language, self help, and social) was administered at about 5, 9, and 12 months…

In this paper some behavioral indices of attachment are defined and some of the factors that affect its development are considered. (Editor)

The behavioral development of rural Guatemalan infants was assessed shortly after birth on a Neonatal Assessment Scale (NAS) and at 6-, 15-, and 24-months-of-age on a Composite Infant Scale (CIS). Summary variables based on NAS performance poorly predicted later assessed performance even as recently as six months after birth. The CIS modestly…

Linguistic and cognitive development of 26 premature and 27 full-term infants was studied longitudinally over the first 3 years of life. Patterns of lexical and cognitive development did not differ substantially between groups, nor did standard language test measures indicate differences at the study's end except with very low birthweight…

Three experiments explored 5- and 7-month-olds' intermodal coordination of proprioceptive information produced by leg movements and visual movement information specifying these same motions. Results suggested that coordination of visual and proprioceptive inputs is constrained by infants' information processing of the displays and have…

Two experiments tracked infants' eye movements to examine use of word-initial information to understand fluent speech. Results indicated that 21- and 18-month-olds recognized partial words as quickly and reliably as whole words. Infants' productive vocabulary and reaction time were related to word recognition accuracy. Results show that…

Responds to Needham and Baillargeon's criticisms and offers an alternative resolution of the conflicting results between the laboratories regarding abilities of infants less than 12 months to use property/featural information for object individuation. Maintains that kind concepts are acquired as infants approach their first birthday and that…