This study examined the course and correlates of the happy victimizer tendency--the expectation that harming others to achieve a goal will result in positive emotional outcomes for the transgressor--from 4 to 6 years of age in a community sample of Canadian children (N = 150; 50% female; Time 1 M[subscript age] = 4.53 years, SD = 0.30; 33%…

Age-related developments in sleep during the preschool years are normative and consequential. Yet, very few studies have examined the antecedents of individual differences in such developments, and most have used parental reports of child sleep. This study aimed to investigate the roles of mutual responsiveness in mother-child interactions and…

This study explored the relationship between electronic media use, sleep and behaviour in preschool-aged children between the ages of three and five years. The primary hypothesis of this study was that excessive electronic media use (>2 hours a day) would positively correlate with sleep patterns (in particular, disturbances) and negative…

This study examined the contribution of nonparental child-care services received during the preschool years to the development of social behavior between kindergarten and the end of elementary school with a birth cohort from Québec, Canada (N = 1,544). Mothers reported on the use of child-care services, while elementary school teachers rated…

Mothers experiencing psychological distress in the postpartum period may have difficulties parenting their children. Inconsistent and unresponsive parenting may increase the risk of later emotional and behavioural problems in children. The purpose of this study was to identify how maternal psychological characteristics cluster at eight weeks…

This study investigated the role of moral emotions in the development of children's sharing behavior (N = 244 4-, 8-, and 12-year-old children). Children's sympathy was measured with both self- and primary caregiver-reports, and participants anticipated their negatively and positively valenced moral emotions (i.e., feeling guilty, sad, or bad; and…

Recent studies suggest that there appears to be a similar developmental sequence in the understanding of mental states in both internal-state language and in standard theory-of-mind tasks. These findings suggest possible developmental relations between children's ability to talk and think about the mind. Two experiments investigated the concurrent…

A vast literature has examined the impact of family income on the health and development outcomes of children. One channel through which increased income may operate is an improvement in a family's ability to provide food, shelter, clothing, books, and other expenditure-related inputs to a child's development. In addition to this channel, many…

Language is a gift of special significance to the human species. Whether the source of the generosity is nature or nurture, or some combination, is controversial, but few scientists or laypeople would dispute the evolutionary and practical value of the key mode of communication. From infancy, language is integral to just about everything one does,…

A number of studies (see Ethier, 1999) have shown that neglect has a deleterious impact on children's development. However, the effect of neglect on a child's internal representations of their family still needs to be investigated. The aim of this study was to examine the attachment patterns observed in a subsample of neglected children as…

Previous research has indicated that pubertal development and the transition from middle or elementary school to junior high may present problems for some preadolescents. The effects of these transitions on achievement, psychological well-being, and social relations were examined using data from the National Longitudinal Survey of Children and…

Down Syndrome children (N=229), aged 1-83 months, from Australia, Canada, and Germany were tested using the Bayley Scales of Infant Development. Test performances on the Bayley's Mental and Motor scales were not dissimilar, leading to the conclusion that young Down Syndrome children from different countries with relatively comparable standards of…

This book examines dramatic interactions between a 3-year-old Inuit girl and the adults in her world. In these playful yet emotionally charged dramas, Inuit adults enact with children the plots that drive Inuit social life; they test, act out problems, entertain themselves, and create children who think and feel like an Inuit. The child, Chubby…

We compared health status, anthropometric and psychological development of 123 children adopted before 18 months of age from China, East Asia (Vietnam, Taiwan, Thailand, South Korea, Cambodia), and Eastern Europe (mostly Russia). Data were collected close to the time of arrival, and 3 and 6 months later. Anthropometric measures included weight,…