Bilingual infants acquire languages in a variety of language environments. Some caregivers follow a one-person-one-language approach in an attempt to not "confuse" their child. However, the central assumption that infants can keep track of what language a person speaks has not been tested. In two studies, we tested whether bilingual and…

The Headturn Preference Procedure (HPP) is widely used in infant research. Previous studies have shown that speech perception measures obtained with HPP are related to later language skills which may make them a potential instrument for an early detection of developmental language risks. The present study assessed the reliability and stability of…

Children's daily contexts shape their experiences. In this study, we assessed whether variations in infant placement (e.g., held, bouncy seat) are associated with infants' exposure to adult speech. Using repeated survey sampling of mothers and continuous audio recordings, we tested whether the use of independence-supporting placements was…

Preterm birth is associated with reduced social attention in infancy. Are these early social attention differences linked to later interactive ability? This study draws on a well-characterized preterm cohort in whom we have previously demonstrated a reduced attentional preference for social information in infancy, using eye-tracking. States of…

We estimated risk factors associated with suspected neuropsychomotor developmental delay at age 2 years, in a birth cohort in the Brazilian Amazon. The Maternal and Child Health and Nutrition in Acre (MINA-Brasil) study is a population-based birth cohort involving children born between July 2015 and June 2016 in the municipality of Cruzeiro do…

Temperament is important to consider when investigating factors influencing communicative development in infancy. Existing research supporting the assumption that temperament and verbal language development are interrelated covers mainly verbal development in toddlerhood onward, but few studies focus on these relations in infancy. The present…

Children of mothers with depressive symptoms often have high cortisol levels. Research shows that various child characteristics (e.g., attachment pattern, internalizing behaviours, and temperament) moderate this association. We suggest that these characteristics share common variance with emotion regulation strategy. Therefore, we examine infant…

This study examined whether parental alcohol use in adolescence, adulthood, and for mothers, during pregnancy, was related to their young children's functioning in terms of their on-time development as indicated by the number of developmental areas in which children experienced delay. Observed parenting practices and family socioeconomic status…

The present study examined the interplay among negative emotionality, responsive parenting and socio-cognitive developmental outcomes (i.e., communication, personal-social and problem-solving outcomes) in about 1620 Korean children using three waves of longitudinal data spanning the first 2 years of their life. Results from the Structural Equation…

The objective of this study was to examine the role of the stimulus material for the prediction of later IQ by early learning measures in the Visual Expectation Paradigm (VExP). The VExP was assessed at 9?months using two types of stimuli, Greebles and human faces. Greebles were assumed to be associated with a higher load on working memory in…

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.…

Although prominent models emphasize that maternal, child, and situational variables are associated with parenting stress, previous research has often neglected to examine associations between maternal and infant temperament characteristics and stress experienced in the parenting role. Additionally, while predictors of global parenting stress have…

The aim of the current study was to examine whether parental mental health, parent-infant relationship, infant characteristics and couple's relationship factors were associated with the infant's development. Forty-two families took part at three time points. The first, at 3?months postpartum, involved a video recorded observation (CARE-index) of…

Research on the effect of paternal mental health problems, particularly on young children, is based predominantly on clinical levels of depression. Furthermore, potential mediators such as marital discord have often been overlooked. This longitudinal community study assessed the association between paternal mental health symptoms in a community…

An interesting paradox in the developmental literature has emerged in which fast-habituating babies tend to be temperamentally difficult and fast language learners, even though temperamentally difficult babies tend to be slow language learners. The purpose of the present investigation was to examine whether the paradoxical relationships among…