An examination of gender-related differential item functioning was conducted on the verbal subtests of the Anadolu-Sak Intelligence Scale. Analyses were conducted using the scale standardization data (N = 4641). A Mantel-Haenszel statistic was used to detect differential item functioning (DIF). A total of 58 verbal analogical reasoning items, 20…

Childhood socioeconomic status (SES), as measured by parental education and family income, is highly predictive of academic achievement, but little is known about how specific cognitive systems shape SES disparities in achievement outcomes. This study investigated the extent to which executive function (EF) mediated associations between parental…

Purpose: Of the three currently recognized variants of primary progressive aphasia, behavioral differentiation between the nonfluent/agrammatic (nfvPPA) and logopenic (lvPPA) variants is particularly difficult. The challenge includes uncertainty regarding diagnosis of apraxia of speech, which is subsumed within criteria for variant classification.…

One critical step toward to a better understanding of creativity is to unveil its underlying genetic architectures. Recently, several studies have been conducted to investigate the effects of dopamine (DA) and 5-hydroxytryptamine (5-HT) related genetic polymorphisms on creativity. Among DA related genes, dopamine D2 receptor gene…

Background: A population sample of people with Down syndrome has been studied from infancy and has now been followed up again at age 47 years. Methods: Intelligence and language skills were tested and daily living skills assessed. Memory/cognitive deterioration was examined using two test instruments. Results: Scores on verbal tests of…

The relationships between processing speed, intelligence, and school achievement were analyzed on a sample of 184 Russian 16-year-old students. Two speeded tasks required the discrimination of simple geometrical shapes and the recognition of the presented meaningless figures. Raven's Advanced Progressive Matrices and the verbal subtests of…

This study assessed trait validity of the Reynolds Intellectual Assessment Scales' (RIAS) Verbal Index (VIX) and Nonverbal Index (NIX) scores in a group of college students. Using both observation of patterns and latent variable modeling of a multitrait-multimethod correlation/covariance matrix, the results indicate that the RIAS VIX scores…

The authors argue that upon publication of a paper, the data should be made available through online archives or repositories. Reasons for not sharing data are discussed and contrasted with advantages of sharing, which include abiding by the scientific principle of openness, keeping the data for posterity, increasing one's impact, facilitation of…

We evaluated over 200 participants semiannually from 12 to 48 months of age on measures of intellectual (Bayley Scales, Stanford-Binet Scale) and verbal (MacArthur-Bates Inventory, Peabody Picture Vocabulary Test) status. Structural equation modeling and hierarchical linear (growth curve) analyses were applied to address the nature of development…

Recently this journal published a research article examining the effectiveness of three different tests in identifying ethnically diverse gifted and talented children (Lewis, DeCamp-Fritson, Ramage, McFarland, & Archwamety, 2007, Volume 15, Number 1, pp. 38-42). After examining the proportions of Caucasian and non-Caucasian children identified…

The Tactual Profile assesses tactual functioning of children with severe visual impairments between 0 and 16 years of age. The Tactual Profile consists of 430 items, measuring tactile skills required for performing everyday tasks at home and in school. Items are graded according to age level and divided into three domains: tactual sensory, tactual…

Intelligence testing is an important part of any individualized education plan; however, a verbal test measure may not be appropriate for the child with a physical disability, visual impairment, and/or the inability to speak. A child with a physical disability may not be able to point accurately or build a tower with blocks; a child with a visual…

Article contains a new intelligence test developed for use by teachers and administrators who are or will be working with Spanish-speaking pupils in the Texas Rio Grande Valley. (Editor/GB)

Confidence intervals for the 80, 85, 90, and 95 percent levels of confidence are presented for the Peabody Picture Vocabulary Test-Revised (PPVT-R) using the estimated true score and obtained score based methods. Separate tables are provided for ages 2-1/2 to 18 and ages 19 and above. (Author/VW)

The intercorrelations among the 12 subtests of the WISC-R were analyzed for each of the 11 age groups in the standardization sample. Clusters were found that corresponded to the verbal and performance Scales. There was also some evidence of a third group of subtests, drawn from both scales. (Author/BW)