Infants in low-resource settings are at heightened risk for compromised cognitive development due to a multitude of environmental insults in their surroundings. However, the onset of adverse outcomes and trajectory of cognitive development in these settings is not well understood. The aims of the present study were to adapt the Mullen Scales of…

Objective: To study familial and nonfamilial environmental influences on attention problems and attention-deficit/hyperactivity disorder (ADHD) in monozygotic twins discordant and concordant-high and low for these traits. Method: Ninety-five twin pairs from The Netherlands Twin Register were selected. Longitudinal survey data were collected at 1,…

Examined longitudinally the effects of infants' age, body dimensions, and experience on the development of crawling. Although most infants displayed multiple crawling postures en route to walking, development did not adhere to a strict progression of obligatory, discrete stages. Duration of experience with earlier forms of crawling predicted the…

The Early Childhood Longitudinal Study, Birth Cohort (ECLS-B) is designed to provide detailed information on children's development, health, and early learning experiences in the years leading up to entry into school. The ECLS-B is the first nationally representative study within the United States to directly assess children's early mental and…

Examined cardiac activity during the first 13 months of life. Indexes of cardiac activity changed in an orderly way with development. There were intercorrelations among the cardiac measures. Analyses indicated that measures of heart-rate variability were significantly higher in insecure children than in secure children. (BC)

THIS ARTICLE PRESENTS SIZE AND GROWTH VELOCITY DATA COLLECTED DURING A LONGITUDINAL STUDY OF 111 NORMAL, HEALTHY NEGRO INFANTS FROM LOWER-MIDDLE-CLASS FAMILIES. DATA WERE OBTAINED FROM BIRTH RECORDS AND MEASUREMENTS TAKEN DURING ROUTINE PHYSICAL EXAMINATIONS. WHEN THIS NEGRO SAMPLE WAS COMPARED WITH WHITE INFANTS IN SIMILAR STUDIES IT WAS FOUND…

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…

This methodology report documents the design, development, and psychometric characteristics of the assessment instruments used in the second wave of the ECLS-B. The assessment instruments discussed measure children's cognitive development (BSF-R), socioemotional functioning (Two Bags Task), security of attachment (TAS-45), and physical development…

The longitudinal child development study involved a cohort of 1008 infants, born in 1966 and constituted as a non-random sample in order to include a substantial number of biological risk cases. Simultaneously considered were perinatal biological and social adversity and measures of attainment in three domains (physical, motoric, and cognitive) at…

At 3 years of age, children who had received food supplementation were an average of 2.6 cm and 642 grams larger than controls. Home visiting and supplementation combined reduced the number of children with severe growth retardation. Participants were 280 infants and their families from poor neighborhoods in Bogota, Colombia. (RH)

A 5-year longitudinal study of infant day care programs in New York City is described. Emphasis is on the effects of day care on the child and family, particulary with regard to mother-infant separation. The study is large scale (involving 550 children and families), and it focuses on service-oriented programs that have been developed in the past…

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…

This book analyzes the MacArthur Longitudinal Twin Study, a collaborative study by leading developmental scientists and behavioral geneticists on the transition from infancy to early childhood. Part 1 of the book describes the twin method and procedures used and introduces the analytic strategies. Parts 2 through 4 present results related to…

This report concerns the field procedures and data analysis being used in the New York City Infant Day Care Study, a large-scale longitudinal study examining publicly-funded, community-controlled group and family day care programs in New York and comparing the effects of these programs and of home rearing on children and their families. Children's…

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…