Evolutionary developmental psychology is a discipline that has the potential to integrate conceptual approaches to the study of behavioral development derived from psychology and biology as well as empirical data from humans and animals. Comparative research with animals, and especially with nonhuman primates, can provide evidence of adaptation in…

For every five healthy babies and infants, there is at least one who brings unusual stresses for its parents with behaviors such as inconsolable crying, sleep disorders, refusal to eat, chronic moodiness, incessant demands for attention, fearful clinging, or tantrums. Available for the first time in English, this influential German collection…

This book is a comprehensive month-by-month guide covering parents' questions about the first year with a new baby. It includes an illustrated baby care primer, a first-aid guide, and recipes. It also contains special sections on the older sibling, selecting the right physician, seasonal concerns and traveling with baby, managing childhood…

This study investigated whether behavioral inhibition is best conceptualized as a continuous variable or as a distinct typology with two or more subcategories. The following data were gathered on 58 infants at 5, 7, 10, and 13 months of age; physiological functioning (cardiovascular activity and salivary cortisol); emotional expressivity in…

To make the point that infant emotions are more dynamic than suggested by Differential Emotions Theory, which maintains that infants show the same prototypical facial expressions for emotions as adults do, this paper explores two questions: (1) when infants experience an emotion, do they always show the corresponding prototypical facial…

This paper discusses the development of instruments to measure individual differences in behavior during infancy. The Infant Temperament Questionnaire (ITQ), which was designed to measure the temperament dimensions identified by the New York Longitudinal Study (NYLS), constituted the methodological starting point in the search for a dimensional…

This exploratory study investigated whether the Brazelton Neonatal Behavioral Assessment Scale (NBAS) can predict an infant's behavior on mastery motivation tasks at 1 and 2 years of age. Subjects were 31 normal, full-term infants from white, mostly middle class families. Infants were assessed using the NBAS with Kansas Supplements (NBAS-K) at a…

This study examined whether cry acoustics enhance the prediction of developmental outcome in preterm infants, after accounting for medical and social variables. Selection criteria for 149 preterm subjects included being born at less than 35 weeks gestational age and less than 1,500 grams; for 25 term subjects, selection criteria included being…

Four experiments investigating the effects of physical and social variables on the production of pointing in infants 10 to 18 months old are described. In the first two experiments, which were primarily concerned with the relation between reaching and index finger pointing, physical dimensions such as distance between baby and target objects were…

Through discussion and illustrative events, an evolving segment of communication is described during the course of transition of one child's total communication system from the sensorimotor or gestural level at 12 months into the level of use of the adult words "more" and "mine," and associated utterances, at 24 months. (Author/RM)

The behaviors of narcotics-addicted and nonaddicted newborns in the first 2 days of life were assessed and compared. (JMB)

Examined sex differences in the play preferences of 2-year-old nursery school children and determined whether teachers of this age group reinforce female sex-typed behaviors as do teachers of older preschoolers. (SDH)

This study was designed to answer the following three questions: (1) Are infants' first words always context-bound when they are initially acquired? (2) Do mothers use infants' first words in a context-bound manner when interacting with their infants? (3) What relationship, if any, exists between infants' initial use of early words and mothers'…