The paper reports on a study which tested whether infants high in negative affectivity are differentially susceptible to observed coparenting behavior in relation to their subsequent social-emotional development. Data came from a longitudinal study of 182 US dual-earner, primiparous couples and their infant children. At nine-months postpartum,…

Objective: No previous longitudinal study has examined the impact of comorbid maternal personality disorder (PD) and depression on child development. We set out to examine whether maternal PD and depression assessed at 2 months post partum would be independently associated with adverse developmental outcomes at 18 months of age. Method: Women were…

Examined relationship between emotion regulation at ages 5, 10, and 18 months, and compliance at 30 months. Found that infants with low levels of regulatory behavior were more likely to be noncompliant as toddlers. High cardiac vagal tone was related to noncompliance to toy clean-up, whereas low cardiac vagal tone was related to noncompliance to…

This longitudinal study of 10 infants in a day care nursery traces the development of recognition and attachment to a primary caregiver from approximately 3 1/2 months of age (shortly after enrollment in the program) through the end of the first year. Monthly assessments of about 10 minutes each, on two successive days, were made of the infant's…

Examined extent to which parent sensitivity, infant affect, and affect regulation at 4 months predicted mother- and father-infant attachment classifications at 1 year. Found that affect regulation and maternal sensitivity discriminated infant-mother attachment groups. The association between maternal sensitivity and infant-mother attachment was…

Used NICHD Early Child Care data to examine effects of attentional persistence on relationship of infant negative emotionality to age 3 outcomes. Found that high negative emotionality related to low social competence only when attentional persistence was poor. Found no moderating effects of attentional persistence for behavior problems. High…

Observed weekly 13 infants from 1 to 6 months of age to determine when they produced different types of smiling and other facial expressions. Found that the cheek-raise and open-mouth dimensions of smiling appear to be associated with, respectively, amplification of processes of sharing positive affect and of visual engagement present to a lesser…

Older Down's syndrome infants responded to the regular reappearance of a squeaky doll with significantly more affective behavior than did younger Down's syndrome infants. Longitudinal research with the younger infants indicated that the onset of affective behavior significantly correlated with mental development and aspects of temperament.…

Examined infant facial expressions at two, four, and six months of age during face-to-face play and a still-face interaction with their mothers. Contrary to differential emotions theory, at no age did proportions or durations of discrete and blended negative expressions differ; they also showed different patterns of developmental change. (MM)

Infants who changed in levels of emotionality between three and nine months were compared with infants who remained stable. Maternal personality, marital factors, and mother-infant interaction accounted for the change in highly emotional infants. Father factors accounted for changes by infants who were initially low in negativity. (BC)

Compared Duchenne and non-Duchenne smiles of 1- to 6-month olds during weekly videotapes of mother/infant interaction for clues regarding emotional significance. Correlated levels of Duchenne and non-Duchenne smiling within sessions; found that they had similar developmental trajectories. Duchenne smiles were typically preceded by non-Duchenne…

Examined association between infants' emotional reactivity and reliance on mother and cognitive and language development at 2 years. Found that infants with high reactivity and reliance on mother during emotion challenges had higher cognitive and language skills than infants with low reactivity and reliance. Poor developmental outcomes were…

Studies on the effects of early day care can be characterized according to two distinct research trends. In the first, which occurred during the 1960s and 1970s, the principal issue was whether day care had any inevitable and negative consequences for the child and, particularly, the mother-child attachment. The second, more recent, trend has been…

Noting that the last 30 years have seen enormous increases in the understanding of infancy, this book examines the current state of knowledge regarding infant development. The book's contents stem from meetings of the British Infancy Research Group. Although the book was intended for advanced undergraduates, it would also be useful for advanced…