Infant cortisol and behavioral responses to receiving one versus two inoculations on one pediatric office visit were observed at two and six months of age. The findings indicate a developmental trend for a decline over age in adrenocortical reactivity to inoculation for infants showing a cortisol release following perturbation. Results were…

A study of fundamental vocal frequency values in 14 children aged 11 to 25 months, an age period characterized by changes in physiological and linguistic development, is reported. A developmental trend downward in vocal frequencies is traced across a number of previous studies, but is only tentative and is not documented in the age group under…

In this study, an attempt was made to determine whether psychophysiological differences existed between 20 prematurely born and 20 full-term infants in their responsiveness to tactile stimulation and in their ability to discriminate among different intensities of such stimulation. (Author/SB)

This paper presents normative data on height, weight, and body mass in a birth cohort studied prospectively from birth to the age of 7 years. Data are presented by gender and race. The cohort was meant to be representative of the St. Louis metropolitan area in that it included poor people's children, and especially black children who had rarely…

Twelve studies examined implications of age-related changes in movement between 6 weeks and 52 years for various psychological domains. Findings indicate an inverted U-shaped pattern in limb movements per hour that peaked in middle childhood, later than expected. This pattern in motor activity has relevance for development, and for ADHD,…

This study examined individual patterns of the maturation of auditory evoked potential (AEP) in normal infants to determine whether longitudinal data show less variability than cross-sectional data, and to further assess the effect of stage of sleep on AEP. The AEPs for 10 children were examined by repeated testing between the ages of about two…

Three studies examined aspects of child care in New Zealand. In the first study, supervisors of 38 child care centers were interviewed about the organization of their centers. Based on the responses, categories were developed to describe the type of center, the persons responsible for management decisions, organization of care by age grouping, and…

This special issue of the "Courrier," a journal for professionals concerned with issues related to the physical and psychological development of children, provides (1) an overview of 25 years of internationally coordinated research, (2) a selection of papers published by the research teams, and (3) a description of the teams and their…

This book provides teachers of infants and toddlers with an in-depth guide to infant and toddler development, theories of growth and development, and best practices in early childhood education. The chapters are: (1) "Innovations: Infant and Toddler Development," looking at the underlying principles of developmental and interactional…