Background: The Wechsler Intelligence Scale for Children (WISC) employs a hierarchical model of general intelligence in which index scores separate out different clinically-relevant aspects of intelligence; the test is designed such that index scores are statistically independent from one another within the normative sample. Whether or not the…

Providing evidence-based interventions in competitive employment settings is critical to improve employment outcomes for individuals with autism. This study used a multiple baseline across behaviors design to enhance the customer service skills of a young adult with autism employed as a cashier at a retail store. Results indicated the use of…

Mensa is an organization of people scoring in the upper two percent on an approved intelligence test. Once considered a group for "geeks", it has expanded its role to offer considerable resources to parents and teachers of the gifted. However, a review of the literature indicated that this information is not routinely available to…

The ability to read is essential for cognitive development. To deepen our understanding of reading acquisition, we explored the neuroanatomical correlates (cortical thickness; CT) of word-reading fluency and sentence comprehension efficiency in Chinese with a group of typically developing children (N = 21; 12 females and 9 males; age range…

An individual's neurodevelopmental and cognitive sequelae to negative early experiences may, in part, be explained by genetic susceptibility. We examined whether extreme differences in the early caregiving environment, defined as exposure to severe psychosocial deprivation associated with institutional care compared to normative rearing,…

This discussion article addresses issues related to expansion of the Wechsler model from four to five factors; multiple broad CHC abilities measured by the Arithmetic subtest; advantages and disadvantages of including complex tasks requiring integration of multiple broad abilities when measuring intelligence; limitations of factor analysis, which…

Background: Individuals with fragile-X syndrome exhibit developmental delay, hyperexcitation and social anxiety; they also show lack of attention and hyperactivity. Few studies have investigated whether levels of functioning change with increasing age. Here, we explored developmental changes across adolescence in the cognitive and behavioural…

Aim: The aim of this article was to explore the effect of duration of breastfeeding on neurocognitive development. Method: The long-term effect of breastfeeding on neurodevelopment was examined through a battery of neuropsychological tests in 1403 children (693 females, 710 males; mean age 11y 9mo [SD 6mo], range: 10y 3mo-12y 8mo) who were…

Aim: Research suggests important links between motor coordination and executive functions. The current study examined whether motor coordination predicts working memory, inhibition, and switching performance, extending previous research by accounting for attention-deficit-hyperactivity disorder (ADHD) symptomatology and other confounding factors,…

Research examining neuropsychological profiles of girls with Asperger's disorder (AD) is sparse. In this study, we sought to characterize neurocognitive profiles of girls with AD compared to girls with learning disabilities (LD). Two groups of school-age girls referred for neuropsychological assessment participated in the study. A total of 23…

Because of ongoing neuromaturation, youth with chronic alcohol/substance use disorders (AUD/SUD) are at risk for cognitive decrements during young adulthood. We prospectively examined cognition over 10 years based on AUD/SUD history. Youth (N = 51) with no AUD/SUD history (n = 14), persisting AUD/SUD (n = 18), or remitted AUD/SUD (n = 19) were…

The hypothesis that fluid intelligence is equivalent to the factor of general intelligence is investigated using LISREL to specify higher-order models in reanalyses of three sets of psychometric data from subjects 11, 13, and 15 years old. The three studies showed fluid intelligence to be equivalent with a general factor. (LMO)

Neuropsychological research can provide a basis for learning how to interpret test data to help solve the problem of how to teach children who fail to read. Insights from brain research can be joined with diagnostic efforts and cognitive, language-based models of reading processes in order to move toward individual assessment and away from…

In the program "Motivation in Depth for Gifted High School Science Students" initiated in 1964, specially selected seventh grade students took in successive summers Biological Sciences Curriculum Study (BSCS), Chemical Education Materials Study, (CHEMS), and Physical Science Study Committee (PSSC) courses; a newly designed course,…

Examines the degree to which a set of neuropsychological, organismic, school achievement, and ethnic identity variables correlated with Bannatyne pattern groupings for a selected sample of 100 right-handed Black 12- and 13-year olds. Finds a possible relationship between Bannatyne pattern categories, gender, and certain types of brain functions.…