Background: Twin studies consistently point to limited genetic influence on attachment security in the infancy period, but no study has examined whether this remains the case in later development. This study presents the findings from a twin study examining the relative importance of genetic and environmental influences on attachment in…

Background: Longitudinal research has demonstrated that individual differences in attachment security show only modest continuity from infancy to adulthood. Recent findings based on retrospective reports suggest that individuals' genetic variation may moderate the developmental associations between early attachment-relevant relationship…

Nighttime sleep awakenings and infant and family characteristics were measured longitudinally in more than 1,200 infants when the infants were 6, 15, 24, and 36 months old. By 6 months of age, the majority of children slept through the night, awakening their mothers only about once or twice per week. However, not all children followed this…

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…

Compares attachment relationships of infants at 12 months to their visual self-recognition at both 18 and 24 months. Individual differences in early attachment relations were related to later self-recognition. In particular, insecurely attached infants showed a trend toward earlier self-recognition than did securely attached infants. (Author/NH)

Examining relationships in the data from assessments conducted when Japanese infants were 7.5, 12, 23, and 27 months of age, this study provides evidence of an interaction between early attachment and temperamental dispositions. Specifically examined were 7.5-month-olds' stranger and separation distress and general fearfulness; 12-month-olds'…

Studies 174 mother-infant dyads to determine the relation between 3-month-old infant, mother, and mother-infant interaction behavior and later attachment behavior. Individual infant differences in sociability at 3 months were found to be related to avoidant behavior and A-type attachment. (RJC)

Examined characteristics of fathers, infants, and marital relationships as antecedents of secure and insecure infant-father attachments in dual- and single-earner families. Change in perceived infant temperament, fathers' recollections of child rearing, and the division of labor distinguished families with secure or insecure infant-father…

To test hypotheses concerning interactional histories associated with variation in quality of infant-mother attachment, data were gathered during naturalistic home observations of 60 infants 1, 3, and 9 months of age. Responses were elicited on the Ainsworth and Wittig strange situations. Results concerned mothers' relatively greater influence in…

Highlights three longitudinal studies examining the hypothesis that attachment security during infancy influences individual differences and adult representations of attachment. Notes that attachment security was significantly stable in two studies, with discontinuity in all three studies related to negative life events and circumstances.…

Assessed attachment security in 60 white middle-class infants at 12 months and conducted Adult Attachment Interview 20 years later. Found that 72 percent of infants received same attachment classification in early adulthood. Forty-four percent of infants whose mothers reported negative life events changed attachment classifications by adulthood,…

Two studies addressed the normative aspects of attachments to mothers and fathers in middle childhood. Using both cross-sectional and longitudinal comparisons, we tested the hypothesis that children show no changes in perceptions of availability of attachment figures across the later middle childhood years, but do utilize attachment figures less…

Examined maternal and infant behaviors, behavioral coordination, maternal response, and nonresponse in relation to security of attachment. Subjects were 40 Euro-American mothers and 39 Central American immigrant mothers studied when their infants were 4-, 8-, and 12-months-old. Found that individual differences on measures of maternal response and…

This study investigated relations between social interaction during infancy and children's subsequent theory of mind (ToM). Findings indicated that children's performance on ToM tasks at 45 and 48 months positively correlated with mothers' appropriate comments on her infant's mental state, but not with attachment security. Mothers' appropriate…

Thirty-two preadolescents were observed in a longitudinal study of attachment and subsequent social development, and case studies of four friendship pairs were conducted. Findings suggest a process model of friendship formation based on repetition of infant attachment history in establishing children's preadolescent friendships. Proposes a 3-stage…