Early impaired response to social partners' distress may negatively impact subsequent social development. Identifying factors contributing to successful responding may inform assessment and intervention. This study explores how: (1) social impairment, and (2) partner familiarity relate to response to partners' distress. Infants with and without…

Around the end of the first year of life, infants develop a social referencing ability -- using emotional information from others to guide their own behavior. Much research on social referencing has focused on changes in behavior in response to emotional information. The present study was an investigation of the changes in neural responses that…

Assessed the role of maternal affect mirroring on development of prosocial behaviors and social expectancies in 2- to 3-month-olds. Found that infants whose mothers ranked high on affect mirroring (attention maintenance, sensitivity, responsiveness) ranked high on prosocial behaviors and social expectancy, whereas infants whose mothers ranked low…

Studies on peer interaction in infancy seem to imply that social group structure emerges from infants' and toddlers' dyadic interactions. In contrast to this position, the present study hypothesizes that attention structure may be a major precursor for social group structure. To investigate that possibility, an attempt was made to develop a…

Prior to expressing language, infants have mastered many means for engaging in referential communication with others. This contention can be supported by reference to (1) developmental changes in the attentional structure of communication and (2) infants' use of affective expressions as they begin to master referential communication. In an effort…

Temperament development was studied in 39 full-term small-for-gestational-age infants and 30 full-term appropriate-for-gestational-age infants. Temperament was measured at 4, 8, and 12 months of age using a behavioral assessment procedure and questionnaire ratings. Findings indicated that restricted fetal growth negatively affects infant…

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…