Understanding language requires readers and listeners to cull meaning from fast-unfolding messages that often contain conflicting cues pointing to incompatible ways of interpreting the input (e.g., "The cat was chased by the mouse"). This article reviews mounting evidence from multiple methods demonstrating that cognitive control plays…

To the best of our knowledge, the genetic foundations that guide human brain development have not changed fundamentally during the past 50,000 years. However, because of their cognitive potential, humans have changed the world tremendously in the past centuries. They have invented technical devices, institutions that regulate cooperation and…

Epigenetic modifications of chromatin structure provide a mechanistic interface for gene-environment interactions that impact the individualization of health trajectories across the lifespan. A growing body of research indicates that dysfunctional epigenetic regulation contributes to poor cognitive outcomes among aged populations. Here we review…

A meta-analysis was performed to examine differences in IQ profiles between individuals with Asperger's disorder (AspD) and high-functioning autism (HFA). Fifty-two studies were included for this study. The results showed that (a) individuals with AspD had significantly higher full-scale IQ, verbal IQ (VIQ), and performance IQ (PIQ) than did…

This critical and reflective literature review examines international research published over the last decade to summarise the different kinds of measures that have been used to explore cognitive load and critiques the strengths and limitations of those focussed on the development of direct empirical approaches. Over the last 40 years, cognitive…

For over 60 years, longitudinal research on tens of thousands of high ability and intellectually precocious youth has consistently revealed the importance of spatial ability for hands-on creative accomplishments and the development of expertise in science, technology, engineering, and mathematical (STEM) disciplines. Yet, individual differences in…

Executive function (EF) skills are the attention-regulation skills that make it possible to sustain attention, keep goals and information in mind, refrain from responding immediately, resist distraction, tolerate frustration, consider the consequences of different behaviors, reflect on past experiences, and plan for the future. As EF research…

This final report reviews the main theoretical and empirical developments concerning components of individual differences in human intelligence. The report is divided into three main sections. The first briefly reviews alternative approaches to understanding the nature of intelligence. The second provides the proposed componential metatheory, a…

This paper explores whether the principles of cognitive load and multimedia theory are mediated by cognitive style, gender, and prior knowledge. Participants were 91 children aged 10-11 years (54 boys, 37 girls), each assigned to one of two presentation modes. In Condition 1 children were presented with diagrams supported by printed textual…

Provides an overview of the existing literature on the development of metacognition in gifted children and emphasizes the needed areas of research. Reviews research examining individual differences in gifted and nongifted children in the development of declarative metacognition knowledge, cognitive monitoring, and the regulation of strategies.…

Hernnstein and Murray raise the specter of a cognitively stratified society that is resistant to change because of heredity and that serves the interests and perpetuates the advantages of the cognitive elite. The authors' policy remedies that focus on the individual and local community can do little to promote genuine equality and social justice.…

This paper summarizes empirical findings of research on a theory of general mental ability, based on laboratory studies of the relationship between measurements of individual differences on conventional psychometric tests and in speed and efficiency of information processes. The paper covers characteristics of "g" (general mental ability),…

Commentary discusses two components of "The Bell Curve: Intelligence and Class Structure in American Life." First, evidence is presented demonstrating central role intelligence plays in American life; second is Spearman's g, the general factor underlying individual differences involving cognitive ability. Concludes that data does not…

This paper reviews several studies on preschoolers' perceptions of alcohol and drug use. The studies make five main points: (1) the process of socialization to alcohol and drug involvement begins earlier than adolescence, and involves the ability to identify alcohol and drugs by name, class, and smell; (2) the process of socialization involves…

The primary goal of this review is to acquaint developmental psychologists who have had little experience in the study of individual differences in cognition with some of the basic rules that govern this type of research. A second goal is to stimulate researchers to consider the potential benefits of studying differences among individuals whose…