Executive functions (EFs) and intelligence were examined concurrently and longitudinally in 126 preschool children. EF was assessed using the Flexible Item Selection Task (FIST) and the Behavior Rating Inventory of Executive Function-Preschool Version (BRIEF-P). Children's intelligence was assessed using the Verbal and Performance subtests from…

New editions of the Wechsler Adult Intelligence and Memory scales are now available. Yet, given the significant changes in these new releases and the skepticism that has met them, independent evidence on their psychometric properties is much needed but currently lacking. We administered the WAIS-IV and the Older Adult version of the WMS-IV to 145…

The Cognitive Proficiency Index (CPI) developed for the most recent Wechsler intelligence scales comprises the working memory and processing speed subtests. It reflects the proficiency and efficiency of cognitive processing and provides another lens for analyzing children's abilities assessed by the Wechsler Intelligence Scale for Children--Fourth…

This study evaluated the concurrent validity of estimated Wechsler Adult Intelligence Scales-Third Edition (WAIS-III) index scores using various one- and two-subtest combinations. Participants were the Canadian WAIS-III standardization sample. Using all possible one- and two-subtest combinations, an estimated Verbal Comprehension Index (VCI), an…

Adult cognitive age differences in the Wechsler Adult Intelligence Scale-III Canadian normative data were curvilinear for most scales and for the Verbal Comprehension (VC), Perceptual Organization (PO), and Working Memory (WM) factors. These showed stable or increasing scores in early adulthood followed by decreasing scores, necessitating a…

Notes that variety of reaction time measures have been developed and studied as correlates of intelligence. Describes several of most widely used reaction time tests and reports summaries of their correlations with intelligence. Describes model that attempts to account for relationship between speed-of-processing and intelligence in terms of…

Twenty primary abilities were measured using the Comprehensive Ability Battery. Factor analysis produced six oblique second-stratum factors. Four were identified as capacities in Cattell's triadic theory of ability structure. Correlations among factors yielded three oblique third-stratum factors. Implications for a hierarchical conceptualization…

Two experiments examined whether correlations between IQ and probed serial running memory depend on IQ-related individual differences in the retention of order information in short-term memory. Children's IQ correlated with memory, regardless of whether instructions emphasized serial or free recall; and with recent item but not recent order…

After reviewsing the literature relative to culture and cognition, an hypothetical model was developed to explain some aspects of concept learning and cognitive development. To test aspects of the model, 3 tests which had had prior use in cross-cultural studies and 5 original tests were administered individually to 34 Stoney Indian and 34…