Investigated whether, in a sample of 30 infants, anger could reliably be observed in facial expressions as early as seven months of age. Also considered was the influence of several variables on anger responses: infants' familiarity with the frustrator, repetition of trials, and sex of the child. (Author/RH)

Considers contributions of Sigmund Freud and Rene Spitz to developmental psychology. Freud's contributions include his observations about play, perspectives on developmental processes, and ideas about unconscious mental activity. Spitz's contributions include his assessments of infants, perspectives on developmental processes, and his concept of…

This report is a portion of a study of attachment behavior: behavior promoting contact and/or proximity of an infant to his mother figure. This report deals specifically with crying, response to brief everyday separations from the mother and to her return, and behavior relevant to physical contact with her. The subjects, 26 infant-mother pairs…

Papers and discussants' comments from a symposium on issues concerning infants' reactions to strangers are presented. Researchers agreed that there is a developmental shift in infant behavior at 7 to 9 months of age when the infant becomes more cautious in approaching strangers. However, investigators hypothesize that the presence of the mother,…

This longitudinal study was concerned with infants' reactions to being greeted by a caregiver upon arrival at the nursery, being left by the parent with the caregiver, and to reunion with the parents. Observations were made twice weekly in the natural setting of the nursery foyer where parents normally arrive with their infants. An affectivity…

This study analyzes infant distress (fussing and crying) and the resulting responses of caregivers in an infant day care nursery. Six babies (mean age 4.8 months when the study began) and their caregivers were observed in seven sequences of observations over a total span of 10 months. Each sequence of observations took place on six days during a…

This book contains a collection of papers that focus on normal infant development, particularly from the standpoint of learning. Written by leading experts from a member of disciplines, these papers deal with topics such as: the examination and observation of infants, including neurological, neuropsychological, and neurobehavioral aspects;…

This study was intended to determine whether differences in maternal attitude and behavior relate to differences in infants' Strange Situation security classification. Subjects for the present study were 38 white middle-class mothers and their normal, 1-year-old infants (20 male, 18 female). Infants who were classified as to the quality of their…