Psychometric and utility studies on Social Emotional Assessment Measure (SEAM), an innovative tool for assessing and monitoring social-emotional and behavioral development in infants and toddlers with disabilities, were conducted. The Infant and Toddler SEAM intervals were the study focus, using mixed methods, including item response theory…

Six-month and 12-month-old infants were studied for wariness (hesitancy to approach new and incongruous stimuli). Both age groups could perceive differences in stimuli, but only the older infants displayed wariness. (DP)

Quantitatively describes the gait development of a group of African children to determine how pattern changes would relate to growth and maturation. A total of 65 children from the Gusii tribe of southwestern Kenya, ranging in age from 13 to 69 months, were selected for study. (Author/RH)

Investigates the developmental sequence of learning to transform objects into agents and recipients of action in early symbolic play. Each of 48 children (from 14 to 25 months old) demonstrated initiative pretending after an adult modeled agent and recipient substitutions in pretending to talk on the telephone. (Author/CB)

To document movement patterns and to examine developmental interrelationships, the ontogeny of rooting, lip, lateral tongue, mouth opening, biting, and Babkin reflexes and the development of emerging chewing behaviors were observed in two normal infants over a period from 1 week to 35 weeks of age. (Author/RH)

Examined consistency in behavioral state organization for 30 fetuses and neonates. Assessed heart rate pattern and presence or absence of eye and gross body movements during sleep, finding quiet sleep (QS), active sleep (AS), and indeterminate states in nearly identical proportions. Duration of enclosed QS epochs provided only stable measure of…

The effects of the familiarity of setting and partner on the social behavior of infants was studied. Subjects were 22 infants 6-18 months old. Eleven of the infants were in a day care center; the remainder were cared for at home. In the first portion of the study, the day care infants were observed interacting with each other in the nursery…

Compared the postural responsiveness of seven-, eight-, and nine-month-old infants. Results indicated greater use of optic flow for postural control after a self-produced locomotor experience. Infants with endogenous (creeping) or artificial (walker) self-produced locomotor experience responded to portions of the optic flow field, whereas…

The Infant-Infant Contact Code, developed to observe the social behavior in infants, is described. Results from using this scale with nine infants under nine months indicated that contacts between infants are complex in nature, that there are developmental changes in models of encounter, and that babies take different roles in relation to the…

Presents a developmental study of changes in infant attachment behaviors. Five groups of female infants, 8, 11, 14, 19, and 24 months of age, were observed during varying types of separation experiences. Changes in proximity behaviors and contact behaviors were analyzed. (BD)

This study examined the development of imitation under naturalistic conditions. Participating were 320 parents, who provided diary records of imitation by their 12-, 15-, and 18-month-old infants over a 7-day period. Approximately half of the infants were first-borns and half had older siblings. The findings indicated that infants of all ages…

Explores current theories of emotional development in order to identify the assumptions that could explain the strong antagonism toward early nonbasic emotions. Draws on the contrasting and polarity of viewpoints to examine the logical implications of these viewpoints for the very possibility of early nonbasic emotions and their reciprocal…

The present study examined infants' capability of extracting object unity in a stationary two-dimensional rod-and-box display. The infants were habituated to a centre-occluded rod and were afterwards tested with both a broken rod and a complete rod. The looking pattern of both female and male participants aged 8 months did not reveal the ability…

This interim report is part of a longitudinal study of developmental behavior designed to determine whether infants from culturally disadvantaged homes have different developmental patterns than infants from advantaged homes. Twenty six culturally disadvantaged infants were individually evaluated on the Bayley Scale of Infant Mental and Motor…

Thirteen infants were presented with a moving object under two lighting conditions to investigate the role of vision in early reaching. Infants were tested twice, at 5 and 7.5 months of age. The results suggest that proprioceptive feedback and sight of the target allowed for successful reaching with limited visual information, even in relatively…