Children growing up in disharmonious families with anxious/depressed mothers are at risk for emotional and behavioral difficulties, however whether these associations reflect postnatal environment, prenatal exposure, or an overall liability is still unclear. This study used prospectively collected data from 24,259 participants of the Norwegian…

The objective of this study was to examine the effects of variations in presentation of play materials on social behaviour of 18- to 30-month-old children. The study group included 102 children attending infant and toddler classes in 14 public childcare centres in Israel. Play materials were presented to the children either in a suggestive manner…

There has been much controversy over the past decades on the origins of gender differences in children's aggressive behavior. A widely held view is that gender differences emerge sometime after 2 years of age and increase in magnitude thereafter because of gender-differentiated socialization practices. The objective of this study was to test…

One hundred and twelve children, 56 toddlers and 56 preschoolers, were observed in their family child care settings to determine whether toddlers cared for in settings that also included preschoolers were, relative to the preschoolers, receiving more or less high-quality care and/or whether their functioning at child care appeared to be more or…

Participants in this study were 66 British toddlers who were observed at home with familiar peers on two occasions, six months apart. The majority of toddlers spoke to their peers, with short sequences of conversation emerging after the age of 24 months. The use of possessive pronouns emerged between 18 and 24 months of age and consolidated over…

This article re-evaluates the concept of "difficult temperament," documenting the difficulty of differentiating normal difficult behavior from difficult temperament, and difficult temperament from diagnosable psychiatric disorder. Researchers and clinicians acknowledge that childhood aggression is occurring with greater frequency and at younger…