Reports an analyses of ratings on Bayley's Infant Behavior Record and test scores from the Bayley Mental Scale for 60 female and 50 male infants at 6, 12, 18 and 24 months of age. Results are discussed in terms of rank-order correlations, behavioral composite scores and study implications. (Author/SDH)

Visual orientation toward a peripheral stimulus by newborns and 7-week-old infants was examined with both a central stimulus present and absent. General conclusion is that, contrary to previous assessments, the neonate appears to exercise internal control over his sampling of the stimulus array rather than being passively captured by it.…

The acquisition of imitative responses without reinforcement was investigated with infants by eliminating contingent reinforcement through the use of videotaped models. Twenty-nine male and female infants were randomly assigned to one of two groups, a Rhythmic Vocalization Group or a Conversation Control Group. Infants in the first group were…

This study compares the face-to-face interaction of infants with fathers to their interaction with mothers and with strangers. Five infants were videotaped in individual interaction with their mothers, fathers, and unfamiliar adults at weekly intervals from the second week until the infants were 6 months old. Infants were seated in a laboratory…

IT IS GENERALLY RECOGNIZED THAT COMPATIBILITY IN ADOPTION DEPENDS ON A SOUND EVALUATION OF THE ADOPTIVE PARENTS AND OF THE INFANT AND THAT THE BEST INTERESTS OF THE CHILD ARE SERVED BY EARLY PLACEMENT IN A PERMANENT HOME. EARLY ASSESSMENT OF THE INFANT, ON WHICH PROPER PLACEMENT IS DEPENDENT, MUST BE PRIMARILY PREDICTIVE. HOWEVER, EXISTING INFANT…

A MAIN PROBLEM ARISING IN THE STUDY OF CATEGORIZING BEHAVIOR IN PRESCHOOL CHILDREN BY MEANS OF SORTING PROCEDURES WAS THAT PERFORMANCE APPEARED TO BE VERY MUCH A FUNCTION OF THE CHILD'S COMPREHENSION OF THE PARTICULAR VERBAL INSTRUCTIONS EMPLOYED BY THE EXPERIMENTER IN PRESENTING THE TASK. THE SPECIFIC AIMS OF THE FIRST STUDY WERE TO INVESTIGATE…

The purpose of this study was to determine the relationship between high risk infants' sensorimotor development and their use of intentional communications. Twenty-six 20-month-old infants, selected at birth by use of High Risk Index, were studied. At 15 months of age each infant was administered five scales from the Uzgiris-Hunt Ordinal Scales of…

This paper reports the effects of one hour of extra post-partum contact between mother and infant on the quality of the attachment observed when the infant was one year old. It was hypothesized that infants in the extra contact condition would be classified as securely attached while regular contact infants would be less frequently classified as…

Traditional research methods of recording infant verbal behavior, namely, descriptions by a single observer transcribing the utterances of a single infant in a naturalistic setting, have been inadequate to provide data necessary for modern linguistic analyses. The Center for Research on Language and Language Behavior has undertaken to correct this…

Three related experiments were conducted to investigate the effects of novel and familiar stimuli on infant attention. The procedure in each of the experiments was to place an infant before a matrix panel composed of six rows of six lights. Two patterns of lights were used to obtain the infants' fixation time: (1) a point pattern, a single…

The effects of obstetrical medication on neonatal behavior were studied using a sample of 64 Israeli infants from medicated and non-medicated mothers. Most medicated mothers received a base dose of 75 mg. of Meperidine plus a base dose of 25 mg. of Phenergan. Other drugs used included Demerol, Valium, Butalgan, Pitocin, Pantopon, Trilene, Naline,…

In this study, free play with toys having unambiguous functions was examined to test the hypothesis that a basic cognitive metamorphosis is associated with the new competences displayed in children at about 12 months. Functional play was observed in 64 children at 9 1/2, 11 1/2, 13 1/2, and 15 1/2 months of age. Six sets of toys with 36…

This study examined behavioral correlates of the rapid central nervous system changes occurring in the first 4 months of life. It was hypothesized that during the early months of infancy, visual preference would occur as a function of quantitative dimensions of the stimuli (size) which could be mediated at a subcortical level. It was further…

This paper briefly reviews studies of infant-peer and infant-mother interaction, and describes a study which compares the effects of mothers and peers on toddler play. Twenty-six toddlers (13 males and 13 females) aged 21 to 24 months were observed in two social situations each: playing with his/her mother, and playing with a familiar peer (after…

In this study, two similar depth perception experiments were conducted to investigate 3-month-old infants' perception of changes in depth while they were being moved. In the first, the subjects, 18 infants (80 to 105 days old) were lowered face down towards the textured floor of a 3-sided enclosure (visual crib). Three experimental conditions were…