Time sampled observations of non-elicited behaviors, obtained for several hundred newborn babies were used to determine (1) whether specific motor patterns are state linked in the manner of spontaneous behaviors; (2) whether certain behaviors appear with greater frequency preprandially; and (3) whether associations between behaviors and states are…

This investigation challenged the causal relationship implicit in the search for behavioral predictors in infancy of later intellectual ability and demonstrated the primacy of infant mental scale scores in the causation of later, more concrete physical behaviors. (Author/JMB)

An infant control habituation-recovery procedure was used to study 3-month-old infants' discrimination of sad, happy, and surprise facial expressions. (Author/JMB)

A comparison was made of the behaviors of 64 12-month-old infants in situations where adult female strangers played either an active or a passive role. (Author/JMB)

Newborn infants showing anthropometric signs of atypical patterns of fetal growth were compared with infants of appropriate growth on the Neonatal Behavioral Assessment Scale and on recently developed supplementary items. The sample consisted of lower-socioeconomic-status families in San Juan, Puerto Rico, and included teenage and older mothers.…

Temporal stability of play behavior and its consistency among toys differing in complexity was assessed by observing 40 eight-month-old infants. The relationship of stability of play to temperament was examined. Findings support the idea that behavioral consistency in infancy is similar to that reported for older children. (RH)

Two experiments assessed the importance of form versus function in 2-year-old infants' categorizations. Nonsense objects were constructed to independently vary form and function. Adults differentially directed subjects' attention to one or the other stimulus dimension. It was hypothesized that children's conceptualizations would vary as a function…

Proposes, as an alternative to Sokolovian models, a model of early habituation based on selective adaptation of feature detectors. The model suggests that early habituation is attributable to the organization and immaturity of the young infant's visual system. (RH)

Investigated changes in non-nutritive sucking behavior of premature infants when light stimulation was presented. Results generally support past evidence that premature infants are capable of making orienting and discriminative responses to visual stimuli and chronological age effects were indicated. (DP)

Series of experiments indicates that young infants are more sensitive to the spatial orientation of forms than was previously thought. This report is based on a dissertation submitted to the University of Strathclyde, August, 1969, in partial fulfillment of the requirements for the degree of MSc. (MH)

Reports on an experiment which involved 42 7 1/2-10 1/2-month-old infants playing a two-position hidden-object game. Results were interpreted to support and extend previous explanations of Stage IV of object-concept development. This report is a revised version of a paper presented at the biennial meeting of the Society for Research in Child…

The tracking behavior of Infants up to 5 months of age was studied using linear and circular trajectories, with partial occlusion of the trajectories. Results indicate that it is not until the age of about 16 weeks that infants can be said to be tracking a moving object as an object. (Author/WY)