Parents completed the Infant Characteristics Questionnaire (ICQ), and their depression and anxiety were measured, during pregnancy and the postpartum period. The ICQ scores formed two components in the mothers' analysis, and one in the fathers'analysis. Predictors of postpartum ICQ scores were the postpartum ICQ components and the anxiety and…

Temperament of nine-month olds was assessed by means of questionnaires and two laboratory visits. Mothers' and fathers' agreement on questionnaire scales was low, and their factor structures differed. In laboratory measures, fearfulness and pleasure showed cross-situation generality, short-term stability, and convergence with questionnaire scales.…

Temporal stability of play behavior and its consistency among toys differing in complexity was assessed by observing 40 eight-month-old infants. The relationship of stability of play to temperament was examined. Findings support the idea that behavioral consistency in infancy is similar to that reported for older children. (RH)

The meaning of mothers' perceptions of their infants' temperamental "difficultness" was explored in three ways. Subjective ratings were elicited from mothers who listened to the cries of four- to six-month-old infants who were not their own. Acoustic properties of the cries of the infants were measured and effects of a variety of…

When 96 mothers and 46 fathers of 6- or 13-month-old infants independently generated behavioral cues they believed contributed to their perception of their infant's recent easiness/difficultness, few systematic differences were found between easy and difficult infants, 6- and 13-month-olds, males and females, and firstborn and later-born.…

Findings argue for an increased emphasis on temperament research in the first postpartum months, for the development of more age-appropriate assessments, for the simultaneous use of multiple measures in such research, and for the continued inclusion of mothers as credible observers of infant behavior. (Author/RH)

Notes that 4-month olds who show a low threshold to become distressed and motorically aroused to unfamiliar stimuli are more likely than others to become fearful and subdued during early childhood, while infants who show a high arousal threshold are more likely to become bold and sociable. Considers implications for psychopathology and relation…

Infants' home-based Q-sort scores of security, dependency, and sociability were compared to laboratory Strange Situation classifications of secure, anxious-resistant, and anxious-avoidant. Secure classification was associated with Q-sort security and sociability, but not dependency. (BC)

Examined whether early differences in stress reactivity were related to self-recognition at 18 months. Found that self-recognition was related to greater cortisol response and less rapid quieting at 6 to 18 months, whereas cortisol and quieting responses of 2- to 4-month-olds did not differentiate self-recognizers and non-self-recognizers,…

No main effect relations between infant proneness-to-distress temperament at 9 months and attachment classification at 13 months were found. Proneness-to-distress temperament was associated with maternal behavior and personality. (PCB)

Findings suggest that infant temperament affects the manner in which security or insecurity is expressed, but does not determine whether an infant develops a secure or insecure attachment to parent. (PCB)

Relationship between maternal ratings of temperament and operant learning was examined in 18 2- to 3-month-old infants. Subjects participated in a conjugate reinforcement experiment; mothers of subjects completed the Carey and McDevitt Revised Infant Temperament Questionnaire 2 to 3 days before the learning study. Two temperament dimensions,…

Factor scores from Bayley's Infant Behavior Record (obtained from 300 to 400 infants at six, 12, 18, and 24 months) were selected to represent three aspects of infant behavior: task orientation, test affect-extraversion, and activity. Findings indicate reordering of individual differences is age-related and that the reordering sequence is somewhat…

Investigated whether, in a sample of 30 infants, anger could reliably be observed in facial expressions as early as seven months of age. Also considered was the influence of several variables on anger responses: infants' familiarity with the frustrator, repetition of trials, and sex of the child. (Author/RH)

Explored relation between temperament and cardiac vagal tone in 12-week olds. Found that infants with higher baseline vagal tone showed fewer negative behaviors in the laboratory and were less disrupted by experimental procedures than infants with lower baselines. Infants who decreased cardiac vagal tone during assessments were rated by mothers as…