OBJECTIVE We tested mediation of birth weight and ADHD symptoms by multiple biologically plausible neurocognitive functions and evaluated familiality of observed indirect effects. METHOD 647 youth from 284 multiplex families with ADHD completed the Arithmetic, Digit Span, Vocabulary, and Block Design subtests of the Wechsler Intelligence Scale for Children (WISC). Multiple mediation tested WI...

The reliability and factorial validity of the Wechsler Intelligence Scale for Children–Fifth Edition: Canadian (WISC-V) was investigated. The higher-order model preferred by Wechsler (2014b) contained five group factors but lacked discriminant validity. An alternative bifactor model with four group factors and one general factor, akin to the traditional Wechsler model, exhibited the best global...

ed for this study. The WISC is a standardized test of assessment designed for children age seven to 16. It is divided into fifteen subtests that form a total of five composite scores, including a FSIQ which represents overall cognitive ability, VCI, PRI, PSI and WMI. Reliability coefficients for the WISC-IV composite scales were obtained on a sample of 661 children from 16 special and clinical ...

The structural validity of the Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV) was evaluated using confirmatory factor analysis for a clinical sample of 1,537 students diagnosed with specific learning disabilities (SLD) by school psychologists in two large southwestern school districts. Results indicated that a bifactor model consisting of four first-order domain specific fact...

This study was conducted based on the limited availability of research comparing the KABC-II and WISC-IV. The study included 30 Caucasian students between the ages of 6 years, 7 months to 16 years 11 months who attend rural school districts in Ohio and West Virginia and were referred due to academic concerns; the sample consisted of 19 females and 11 males with an average age of 9 years, 7 mont...

according to the mother's key roles in bringing up emotional and cognitive abilities of mentally retarded children and respect to positive psychology in recent decades, this research is administered to assess the relation between mother's happiness level with cognitive- executive functions (i.e. attention, working memory, inhibition and planning) and facial emotional recognition ability as two ...

aim and background: one of the most important learning disabilities is spelling learning disability which is accompanied by memory problems and social skills. the main aim of present research was to review the effectiveness of cognitive-behavioral play therapy on memory and social skills of children with spelling learning disability. methods and materials: the research method of present study w...