Videotapes were made of the prehensile activity and looking behavior of 2- and 5-month-old infants in the presence of objects placed within and beyond possible contact distance. (BRT)

This study investigated at the age at which infants become able to discriminate between their mothers and females strangers, as measured by differential patterns of pauses during the infants' crying while being spoken to by their mothers and female strangers. The subjects, 14 infants ranging in age from 7 to 20 days, were fed, burped, and changed,…

This study investigated the response behavior of nine infants, aged 13-15 weeks, to a recurrent pattern of visual and verbal stimuli presented by their own mothers and by female strangers. The infants were presented with the following 2-minute sequence (repeated 3 times): (1) one-half minute of an unknown female leaning over the crib with a…

This paper presents a study of the effects of "typical" infant day care on children's behavior and development. The variables studied include center versus home programs, length of time in day care, age of child and sex of child. Subjects for the study were 114 boys and girls (ranging in age from 12 to 36 months) enrolled in either a day…

This paper outlines the design and outcomes of an investigation comparing a day care program and home-rearing of infants and preschool children and discusses at length some issues involved in day care research. The study proposed to develop and evaluate a program at a Toronto municipal day care center which accepted infants, and compare the…