Research concerning temperament in children and adults with autism spectrum disorder (ASD) has suggested a consistent profile of low positive affect, high negative affect, and low regulation (Visser et al., 2016). One area receiving less attention is individual differences among children diagnosed with ASD. The primary objective of this study was…

Child's crying is the stimuli serving the development of a child-parent relationship through evoking child-oriented and parent-oriented parental reactions. Individual differences in parental reactions to crying have been partly explained by parental and child's temperament. We conducted two studies to verify the predicting effects of temperamental…

To benefit from the exploration of their bodies and their physical and social environments, infants need to detect sensorimotor contingencies linking their actions to sensory feedback. This ability, which seems to be present in babies from birth and even in utero, has been widely used by researchers in their study of early development. However, a…

Research on sources of individual difference in parental Infant-Directed Speech (IDS) is limited and there is a particular lack of research on fathers' compared to mothers' speech. This study examined the predictive relations between infant characteristics and variability in paternal lexical diversity (LD) in dyadic free play with two-year-olds (M…

The current study examined the relations between individual differences in attention to emotion faces and temperamental negative affect across the first 2 years of life. Infant studies have noted a normative pattern of preferential attention to salient cues, particularly angry faces. A parallel literature suggests that elevated attention bias to…

Parental sensitivity and nurturance are important mechanisms for establishing biological, emotional, and social functioning in childhood. Sensitive, nurturing care is most critical during the first three years of life, when attachment relationships form and parental care shapes foundational neural and physiological systems, with lifelong…

The current study examined the stability of temperament over time. Observers and mothers rated child behavior at eight timepoints across three assessment waves (8, 15, and 30 months of age). Internal consistency reliability of aggregates of the eight observer reports and eight mother reports were high. When considering single timepoint…

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…

The current study examined the relations between individual differences in sustained attention in infancy, the temperamental trait behavioral inhibition in childhood, and social behavior in adolescence. The authors assessed 9-month-old infants using an interrupted-stimulus attention paradigm. Behavioral inhibition was subsequently assessed in the…

This article provides a review and synthesis of concepts, research programs, and measures in the infant and child temperament area. First, the authors present an overview of five classical approaches to the study of child temperament that continue to stimulate research today. Subsequently, the authors carve out key definitional criteria for…

Supports the hypothesis that temperamentally fussier 5- to 9-month-old infants are more fearful and less friendly toward strangers than are more easygoing infants of the same age. (MP)

Explored genetic and environmental underpinnings of temperamental differences in 3- to 16-month-old twins and their parents. Found that additive genetic and shared environmental effects best represented smiling, laughter, and duration of orienting. Shared environmental effects fully accounted for co-twin similarity for soothability. Additive…

To investigate the relationship of differences in 2-year-old children's reactions to strangers to differences in their temperaments and their security of attachment with their mothers, a correlational study was conducted with 47 infants and their parents. In the first component of the study, both parents completed a child temperament rating…

The reliability and validity of three measures of infant temperament were compared in this study. The measures included the revised Carey (1978) Infant Temperament Questionnaire, a version of the Bayley (1969) Infant Behavior Record revised for completion by the parent, and a modified version of Buss and Plomin's (1975) EASI, an acronym standing…

Reviews current research on the individual temperament of young children and recommends strategies to understand and build upon children's personality strengths. Discusses the influence of adult perceptions and misperceptions on children's personality development. (DT)