Despite growing interest in placental epigenetics, the combined impact of prenatal stress and socioeconomic status on placental methylation is still largely understudied. We conducted a study to examine the associations of prenatal stress and socioeconomic factors (household income, Hollingshead socioeconomic index) with placental methylation.…

This study described infant/toddler teachers' (N = 106) perceptions of stress intensity and exhaustion (emotional, physical, mental) intensity. We examined the associations between stress and exhaustion and teachers' reports of stress sources and coping strategy use. Using ecological momentary assessment (EMA), teachers from Early Head Start…

The transition to motherhood can be challenging. The baby book market has taken advantage of this, publishing a range of books that suggest adopting strict routines for infant sleep, feeding, and general care. Despite their multi-million sales, their impact has not been established. The aim of this study was to explore the maternal experience of…

Parental engagement in stimulating activities and support in both formal and informal learning environments are important for early childhood development. However, little is known about how parental mental health and beliefs about early childhood development shape such investments. We draw on a sample of young children and their primary caregiver…

We evaluated the extent to which the externalizing behavior construct is self-organizing in the first 2 years of life. Based on dynamic systems theory, we hypothesized that changes in physical aggression, defiance, activity level, and distress to limitations would each be predicted by earlier manifestations of one another. These hypotheses were…

Is income during children's earliest years a key determinant of long-term child and adult success in the longer run? The research to date, Christopher Wimer and Sharon Wolf write, suggests that it is. Wimer and Wolf review substantial descriptive evidence that income can enhance child development and later adult outcomes, and that it does so most…

The current study examined the influence of maternal characteristics on the development of infant smiling and laughter, a marker of early positive emotionality (PE) and how maternal characteristics and the development of infant PE contributed to subsequent maternal parenting. One hundred fifty-nine mothers with 4-month-old infants participated.…

This study investigated the normative use and developmental course of physical aggression (PA), defined as use of physical force such as hitting, biting, and kicking, from 8 to 26 months and predictors thereof. We used data from the Behavior Outlook Norwegian Developmental Study, comprising 1,159 children (559 girls and 600 boys). Both mothers and…

Research Findings: Data from a national sample of Portuguese preschool centers were used to examine the relationship between age of start and number of hours in child care and levels of externalizing and prosocial behaviors with peers. Participants were both parents and teachers of 543 children (mean age = 4.5 years, 50.6% girls). Children started…

This study explored the effects of basic developmental care on the behaviour of very pre-term infants and parental stress at 1 and 2 years of corrected age. A randomized controlled trial was done to compare basic Developmental Care (standardized nests and incubator covers) and controls (standard care). Parents of infants born less than 32 weeks of…

Episodes of crying with higher fundamental frequency (f0) are perceived as more aversive and distressful than lower frequency cries. Besides, previous studies have speculated that in children with Autism Spectrum Disorder (ASD) higher f0 may account for evoking mental states of uneasiness in the caregiver. Moreover no evidence on developmental…

Baseline and heelstick measures of behavioral state, heart period, vagal tone, and salivary cortisol were obtained from 50 full-term newborns. Mothers completed Rothbart's Infant Behavior Questionnaire when the infants reached six months of age. Greater reactivity to the heelstick was associated with lower scores on the…

Infant symbolic play was examined in relation to prenatal alcohol exposure and socioenvironmental background and to predict which infants met criteria for fetal alcohol syndrome (FAS) at 5 years. A total of 107 Cape-Colored, South African infants born to heavy drinking mothers and abstainers/light drinkers were recruited prenatally. Complexity of…

Data provide strong evidence that studies of stress and cortisol release in infants must take into account basal level, circadian rhythm, and behavioral effects and employ appropriate statistical procedures. Participants were infants of two, four, and six months of age from whom salivary cortisol was obtained before and 15 minutes after an…

Observed infants' stress responses to a well-baby examination and inoculation at two, four, and six months. Found an increase in salivary cortisol level over baseline in response to the procedures and that the cortisol response decreased with age, indicating a developmental shift in adrenocortical functioning between two and six months of age. (BC)