Gender differences in early childhood development are under-researched in low- and middle-income countries (LMICs) where almost 90% of the world's young children live. This study examines the direction, magnitude, and variation of gender similarities and differences in 3- and 4-year-olds' early childhood development in 71 low- and middle-income…

Discusses normative developmental changes in cardiovascular and electrodermal activity and describes the dynamic balance between branches of the autonomic nervous system. Issues for further developmental study are identified, and problems and limitations in the psychophysiological study of children are explored. (Author/RH)

Reviews different approaches used over the past two decades to study early behavioral development in infants. Reviews research in areas as physical and cognitive development and the role of adult caretakers. (BD)

This article provides a literature review on the consequences of adolescent childbearing on postnatal infant development. (DB)

Measured physical and cognitive development of 7- to 10-year-old Brazilian children in 3 social groups. Domestic servants' children were taller and heavier than children in slums, and shorter than middle-class children. Domestic servants' sons scored similar to slum-dwelling boys on cognitive measures. (BC)