Examined the function and effectiveness of certain behaviors in regulating negative arousal in infants who participated in an arm restraint procedure at age 5 months and a toy removal task at age 10 months. Results showed that comforting behaviors were preferred at both 5 and 10 months of age. (MDM)

Mothers viewed videotapes of interaction with their 20 full-term healthy, 20 preterm healthy, and 20 preterm sick infants between 11 and 26 weeks of age. Relationships between infant gazing, laughing, and fussing and maternal interpretation of emotional state, attention preference, attention curiosity, and physical needs were analyzed. (Author/SW)

Evolutionary developmental psychology is a discipline that has the potential to integrate conceptual approaches to the study of behavioral development derived from psychology and biology as well as empirical data from humans and animals. Comparative research with animals, and especially with nonhuman primates, can provide evidence of adaptation in…

The purpose of this study was to longitudinally examine the development of anticipatory visual search and to find out the effects of preceding experiences upon the search during the second year of life. The sample consisted of 18 Japanese firstborn nonretarded children from middle-class families who were individually tested at 11, 12, 14, 16, 22,…

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…

Reports comparisons of behaviors of nine chimpanzee and nine human newborns on a standardized human neonatal assessment scale at the ages of three days and one month. Human infants scored higher than chimpanzee infants on the orientation cluster at both ages, but were lower than chimpanzee infants in motoric maturity. (RJC)

This study examined how change occurs in infant gestural communication. Five infants were videotaped once a week from 10 to 12 months and twice a week from 12 to 15 months during play sessions with their mothers in a laboratory playroom. These sessions consisted of 10 minutes of a structured play context in which infants were seated at a table at…

Presents a mathematical model of the development of reaching behavior in infants, along with the results of two experiments that showed that infant movements could be decomposed into the underlying submovements using a principled method; and the angular error in infant reaches matches the form and magnitude of error assumed by the model. (MDM)

Studied 112 preterm infants to determine developmental changes and stability of individual differences. Results indicate significant developmental gains with age, and highly significant individual stability of performance across age. (RJC)

Ninety-two clinically normal infants (48 male, 44 female) were tested at 2 and 90 days of age to examine the continuity of newborn behavior through early infancy across a broad range of behaviors. (MP)

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…

This study identifies elements in the attachment behaviors of 7-month infants which predict the quality of their attachment to their mothers at 13 months. At 7 months 147 infants were observed (and videotaped) during a free play period with their mothers present, during a separation from their mothers and then during a reunion period. At 13 months…

Examines the extent to which an infant's social initiative resists or is modified by three variations in the behavior of adult responsiveness: repeated responses, varied responses, and eye aversion. (HOD)

A total of 192 high-risk infants and 85 full-term healthy newborn infants were administered the Bayley Scales of Infant Development. A principal component analysis was performed separately for the high-risk and control infants. Results suggest that the high-risk infant is similar to the normal infant in behavioral development, especially when…