Relations between infant-mother attachment security at 15 months and infants' (N = 206) joint attention behaviors (a) with an experimenter at 8 and 15 months, and (b) with their mothers at 15 months were investigated. No concurrent or longitudinal relations were observed between attachment security and infants' tendency to respond to an…

Infants' differential vocal response (DVR) towards their mother and a female stranger at 3 months of age has been predominantly investigated as an index of early cognitive functioning. The present study explored the relationship between DVR and different infant and mother indicators of the developing relationship quality in a sample of 23…

This document consists of four research reports and one research note focusing on several aspects of the cognitive and emotional development of young children. The first article explores two theories of the relationship between cognition and emotion, reporting on an investigation of that relationship in a simple learning task involving 60 Japanese…