Mounting clinical evidence suggests that abnormalities of social engagement in children with autism are present even during infancy. However, direct experimental documentation of these abnormalities is still limited. In this case report of a 15-month-old infant with autism, we measured visual fixation patterns to both naturalistic and ambiguous…

This paper presents the results of a longitudinal examination of syntactic skills, starting at the age of emergence of simple sentences and continuing through the emergence of complex sentences. We ask whether there is systematic variability among children from different socioeconomic backgrounds in the early stages of sentence production. The…

There are two different conceptions of the innate basis for numerical abilities. On the one hand, it is claimed that infants possess a "number module" that enables them to construct concepts of the exact numerosities of sets upon which arithmetic develops (e.g. Butterworth, 1999 ; Gelman & Gallistel, 1978). On the other hand, it has been proposed…

Forty toddlers aged 20 to 24 months were presented with 32 pairs of images with the auditory stimulus Look followed by the name of the target image (e.g. "Look...tree") in an intermodal preferential looking (IPL) paradigm. The same series of 16 items was presented first with one image as target and then with the other member of the pair as target.…

In this paper we consider the perceptual and conceptual contributions that shape early word learning, using research on the "shape bias" as a case in point. In our view, conceptual, linguistic, social-pragmatic, and perceptual sources of information influence one another powerfully and continuously in the service of word learning throughout…

Young children's skilled generalization of newly learned nouns to new instances has become the battleground for two very different approaches to cognition. This debate is a proxy for a larger dispute in cognitive science and cognitive development: cognition as rule-like amodal propositions, on the one hand, or as embodied, modal, and dynamic…

This study examined the developmental trajectories of proactive and reactive aggression from 5th to 9th grade in a sample of 126 children (66% male) screened to be in the top 31% on a measure of aggression. Prospective relations between proactive and reactive aggression and delinquency were also examined. Findings suggested that levels of both…

This article proposes a framework for theory and research on risk-taking that is informed by developmental neuroscience. Two fundamental questions motivate this review. First, why does risk-taking increase between childhood and adolescence? Second, why does risk-taking decline between adolescence and adulthood? Risk-taking increases between…

Adolescent risk-taking can be illuminated through an understanding of the development of the brain, of dual-processing theories, and of social norms and meanings. When adolescents take unjustified risks, it is often because of the weakness of their analytic systems, which provide an inadequate check on impulsive or ill-considered decisions. Social…

Since 1914, "The Music Educators Journal" (MEJ, initially the "Music Supervisors' Bulletin" and then "Music Supervisors' Journal") has served the music education profession by providing a platform for the broad dissemination of philosophy, practice-based techniques, research implications, and reports of the efforts of MENC: The National…

Using the new "emerging adulthood" developmental period (Arnett, 2000) as a theoretical framework, this article emphasizes the challenges faced by emerging adults (17- to 24-year-olds) enrolled in adult education. First, emerging adulthood as a developmental period and the additional difficulties experienced by youths with emotional,…

This study investigated how infants gather information about their environment through looking and how that changes with increases in motor skills. In Experiment 1, 9.5- and 14-month-olds participated in a 10-min free play session with both a stranger and ambiguous toys present. There was a significant developmental progression from passive to…

Disruptive behavior, including aggression, defiance, and temper tantrums, typically peaks in early toddlerhood and decreases by school entry; however, some children do not show this normative decline. The current study examined disruptive behavior in 318 boys and girls at 2, 4, and 5 years of age and frustration reactivity, physiological…

This paper reports on a study that used verbal protocols to uncover the cognitive strategies of children from Sydney, Australia, aged 8- to 9-years-old, when they were engaged in a range of word sorting and editing activities. The children's cognitive strategies have been analysed in terms of a developmental stage theory of spelling. The findings…

This paper provides information on a measure that was developed to assess children's level of development at preschool and entry to school level, as well as their readiness for formal schooling. This measure--"Who Am I?"--is based on early copying and writing skills and is designed to identify the broad stages of development that underlie…