An increasing number of families are enrolling their children in out-of-home early childcare services. In addition, a growing number of community childcare programs are including children with developmental disabilities. While some studies have explored the effects of inclusion for preschool children with disabilities, there is little knowledge…

This study examines the influence of social context on the home environment for children aged 0 to 14years, testing for differences between Cubans (n = 47), Mexicans (n = 240), Mexican Americans (n = 415), and Puerto Ricans (n = 162). Hierarchical linear models showed significant cultural and acculturation effects on the trajectories of cognitive…

Associations between experiences and outcomes could be due to (a) continuation of adversity or (b) organismic changes, including experience-expectant and experience-adaptive developmental programming. The adoption into British families of children who had been reared in profoundly depriving institutions in Romania presented an opportunity to test…

The processes behind the transition from consistently failing tests of false belief understanding to consistently passing the tests was investigated by tracking changes in children's mental state understanding. Participants were 42 children (aged 3;1 to 4;3). There were two conditions; an experimental condition in which children were tested on a…

A robust lag was evidenced between the attribution to an individual of a false belief about the world and the attribution of the false emotion associated with this false belief (Bradmetz & Schneider, 1999). This lag was unexpected in the frame of current theories of mind which consider that emotion has a rational cognitive basis. The present paper…

The articles featured in this issue make apparent the variety of perceptual and cognitive competencies that follow curvilinear developmental courses as well as the complexities inherent in accounting for such phenomena. What is revealed is the way in which a fit is achieved between organisms and the environments they occupy. Curvilinear…

U-shaped developmental functions, and their N-shaped cousins, have intrigued developmental psychologists for decades because they provide a compelling demonstration that development does not always entail a monotonic increase across age in a single underlying ability. Instead, the causes of development are much more complex. Indeed,…

This article reports 2 experiments examining the changing role of iconicity in symbol learning and its implications regarding the mechanisms supporting symbol-to-referent mapping. Experiment 1 compared 18- and 26-month-olds' mapping of iconic gestures (e.g., hopping gesture for a rabbit) vs. arbitrary gestures (e.g., dropping motion for a rabbit).…

In order to determine students' achievement, science teachers have to develop their own assessment tools. This study attempts to find out the relationship between the teachers' assessment tools and students' cognitive development according to the teachers' teaching experiences. Six open-ended survey questions were developed and delivered to 59…

Background: Deficits in autism have been characterised as a bias towards local over global processing. This paper examines whether there is a deficit in gestalt grouping in autism. Method: Twenty-five low-functioning children with autism and 25 controls who were matched for chronological age and verbal mental age took part in the study. Results:…

Forty-four children (mean 3.8 years) were given three false belief, a working memory, and four language tasks (each designed to tap a different aspect of syntax or semantics), and were tested again 6 months later. Once the range of scores in the language and false belief tasks were equated, there was a bidirectional relation between language and…

Harris and Koenig make a compelling case for the importance of adult "testimony" and its influence on children's developing conceptions of topics in science and religion. This commentary considers how their analysis relates to constructivist and sociocultural theories and discusses several ways in which Harris and Koenig's arguments help to debunk…

This study examined the relationship between characteristics of mothers' talk about future events and young children's ability to contribute to naturalistic conversations about future events. Results indicated that three maternal style factors were related to 2.5- and 4-year-olds' contributions: elaborative/advanced language, general and past…

One strand of home visiting research investigates efficacy while another investigates under what conditions programs achieve outcomes. The current study follows the latter approach. Using a within-program design in a sample of 11 home-based sites in the Early Head Start Research and Evaluation study, this study found that three components of home…

In this article we provide a review of theory and research on the use of peers to influence learning outcomes in physical education. First, we summarize the empirical literature on the use of peers in general education. Next, Piaget's equilibration theory, Vygotsky's sociocultural theory, and Skinner's behavior analytic theory are discussed with…