BACKGROUND Glycol ethers (GE) are widely used organic solvents. Despite the potential neurotoxicity of several families of organic solvents, little is known about the impact of GE on the neurodevelopment of infants and children. OBJECTIVES We investigated the relation between urinary concentrations of GE metabolites in pregnant women and neurocognitive abilities in their 6-year-old children i...

Background: Informed consent forms and clinical study participation explanations contain many specialized words including medical terms that are difficult to understand. The difficulty is particularly obvious for children with developmental disorders who show attention or similar problems. This study quantitatively evaluated the decision-making ability of these children using the Wechsler Intel...

The etiology of the observed relationship between reading and mathematics performance was examined by analyzing data from samples of same-sex twin pairs tested in the Colorado Learning Disabilities Research Center. Bivariate phenotypic and genetic structural equation models were fitted to data from 526 twin pairs selected for reading deficits (290 identical and 236 same-sex fraternal) and 355 c...

Polycyclic aromatic hydrocarbons (PAHs) are widespread environmental pollutants produced by combustion of fossil fuel and other organic materials. Both experimental animal and human studies have reported the harmful impacts of PAH compounds on fetal growth and neurodevelopment, including verbal IQ of children. Here, we have assessed the association between cognitive function of children and pre...

OBJECTIVE To assess the behavioural and academic improvement of children who attended a day treatment program during a defined period of time. METHOD Forty-six children admitted consecutively to the project were assessed on admission and discharge using behavioural and academic measures. They also had intelligence and language assessments. The subjects attended the program for one academic ye...

BACKGROUND Attention-deficit/hyperactivity disorder (ADHD) is a common behavioral and neurocognitive disorder in school-age children. Methylphenidate (MPH) is the most frequently prescribed CNS stimulant for ADHD. The aim of this study is to evaluate the changes in intelligence quotient and domains of neurocognitive function after long-term MPH treatment of Taiwanese children with ADHD. METHO...

OBJECTIVE Recent evidence suggests that the factor structure of the Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV) is better explained by a five-factor model rather than the four-factor model in the standardization sample. The current study examined the WISC-IV's factor structure in a sample of children with ADHD. METHOD Participants included 314 children and adolescents wh...

OBJECTIVE The aim of this study was to compare the Persian version of the wechsler intelligence scale for children - fourth edition (WISC-IV) and cognitive assessment system (CAS) tests, to determine the correlation between their scales and to evaluate the probable concurrent validity of these tests in patients with learning disorders. METHODS One-hundered-sixty-two children with learning dis...

Irish educational psychologists frequently use the Wechsler Intelligence Scale for Children– Fourth U.K. Edition (WISC–IV) in clinical assessments of children with learning difficulties. Unfortunately, reliability and validity studies of the WISC–IV have not yet been reported. This study examined the construct validity of WISC–IV core subtest scores obtained from evaluations to assess learning ...

the purpose of this study is to adapt, normalize and to determine reliability and validity of wisc- i i i. at adaptation stage, 835 students were selected through a systematic from 30 schools, after completion the test, suitable items were chosen according to iranian culture. then, at normalizing stage, 2456 boys and girls were selected through a systematic random sampling from 72 educational d...