The purpose of this study was to determine the reliability and validity of the Loewenstein Occupational Therapy Cognitive Assessment (LOTCA) battery. The battery provides an initial profile of the cognitive abilities of the brain-injured patient that can be used as a starting point for occupational therapy intervention and as a screening test for further assessment. The LOTCA consists of 20 sub...

We attempted to determine whether schizophrenic patients can improve their performance on an abstract reasoning task through experience, and to ascertain how the degree of learning compares with brain-damaged patients and patient controls. Two hundred and two schizophrenic patients, 179 brain-damaged patients and 229 patient controls were compared with regard to their improvement on Subtest 6 r...

Information processing speed, as measured by elementary cognitive tasks, is correlated with higher order cognitive ability so that increased speed relates to improved cognitive performance. The question of whether the genetic variation in Inspection Time (IT) and Choice Reaction Time (CRT) is associated with IQ through a unitary factor was addressed in this multivariate genetic study of IT, CRT...

Ideally, test performance is unrelated to the mode under which one administers the test. This study investigated relationships between test mode (paper-and-pencil vs. computerized-with-editorial-control, and computerized-without-editorial-control) and computer familiarity (lower, moderate, and higher) with test performance on the Graduate Record Exam (GRE). The GRE test was administered to 222 ...

PURPOSE To examine the applicability of the newly developed Rivermead Behavioural Memory Test - Third Edition (RBMT-3) as an ecologically-valid memory test in patients with alcohol-related cognitive disorders. PATIENTS AND METHODS An authorized Dutch translation of the RBMT-3 was developed, equivalent to the UK version, and administered to a total of 151 participants - 49 patients with amnesi...

OBJECTIVE To date, very few studies have been conducted on the neurodevelopmental well-being of children conceived through intracytoplasmic sperm injection (ICSI). The limitations of these studies often include a lack of comparison with a demographically matched, naturally conceived (NC) group and the investigation of only very young children, with relatively small samples sizes. One study show...

Gender differences among children and adolescents were examined on 14 separate measures of short-term memory. A nationally stratified sample of 1,279 children and adolescents, 637 males and 642 females, ranging in age between 5 and 19 years, were assessed on the 14 subtests of the Test of Memory and Learning (TOMAL). Factor structure of the TOMAL was determined to be invariant as a function of ...

The purpose of this study was to investigate rater effects on the TGMD-2 when it applied to children with intellectual disability. A total of 22 children with intellectual disabilities participated in this study. Children's performances in each of 12 subtests of the TGMD-2 were recorded via video and scored by three adapted physical activity specialists who have expertise in the TGMD-2. Two adv...

To further knowledge concerning the nature and nurture of intelligence, we scrutinized how heritability coefficients vary across specific cognitive abilities both theoretically and empirically. Data from 23 twin studies (combined N = 7,852) showed that (a) in adult samples, culture-loaded subtests tend to demonstrate greater heritability coefficients than do culture-reduced subtests; and (b) in...

When we tested predictions from genetic similarity theory, we found that spouses assort on the basis of the more genetically influenced of cognitive tests. From our analysis of data from several studies employing 15 subtests from the Hawaii Family Study of Cognition and 11 subtests from the Wechsler Adult Intelligence Scale, we calculated positive correlations between assortative mating coeffic...