The placebo effect is any outcome that is not attributed to a specific treatment but rather to an individual's mindset (Benson & Friedman, 1996). This phenomenon can extend beyond its typical use in pharmaceutical drugs to involve aspects of everyday life, such as the effect of sleep on cognitive functioning. In 2 studies examining whether…

The general ("g") factor is the most general and relevant cognitive ability. This factor is considered to be one of the most important predictors of academic achievement and of many other socially relevant behavioral outcomes. In the last decades, many researchers have investigated the possible changes in the relevance of the…

Identified groups with high and low levels of mistrust of Whites. Half of the participants in each group were then administered the WAIS by a white examiner. The remaining were tested by a Black examiner. The Black examiner-high mistrust group scored significantly higher than the White examiner-high mistrust group. (Author)

Timed and untimed scoring methods were employed with five WAIS subtests administered to 40 young and 40 old subjects matched for verbal intelligence. Elimination of bonuses for rapid performance differentially improved the scores of older subjects but did not raise those scores to levels achieved by the young. (Author)

This study investigated Wechsler Adult Intelligence Scale-Revised (WAIS-R) profiles of deaf adolescents referred for academic difficulties. In addition, differences between referral deaf students and non-referral deaf peers were explored. The sample consisted of 28 severely-to-profoundly hearing impaired students enrolled in the School of…

Compares intelligence and achievement test results from learning disabled (LD) and normal Mexican American high school students with those of Anglo LD and normal students. No differences in performance IQ between Mexican and Anglo LDs. Suggests language proficiency or sociocultural factors, not learning disabilities, cause differences. (Author/TES)