In the article, contributions to the study of a link between autism and left hemisphere damage are systematically reviewed. A simple cause-and-effect model of abnormal cerebral asymmetry and autism is rejected in favor of a more integrative yet parsimonious model that specifically attempts to explain the language disorder common to autism.…

The majority of Ss preferred integrated activities on the YSOLAT. Data suggested that intellectual giftedness may be associated with "nonright handedness" which is expressed either as left handedness or ambidexterity. (SBH)

Evidence gathered from commissurotomy (split-brain) patients and right-hemisphere/left-hemisphere studies on normal intact humans is reviewed and evaluated. Concludes that right-left hemisphere differences reported in normal subjects are small and that there is no scientific basis for any reorganization of curricular, teaching, or testing…

States that hemispheric preference literature reveals mostly marginally significant data--different ways of probing human thought processing exist and various mistakes can sometimes account for borderline data. Elaborates the Sonnier Model of Hemispheric Preferences (SMHP) which may provide clarification and more fruitful research questions and…

Dominant use of the left or right hand was studied in relation to performance in a business communication course. Data from 671 students indicated no significant difference between final grade outcome of lefthanders and that of righthanders. (JOW)

The aim of the present behavioural experiment was to evaluate the most lateralized among two phonological (phoneme vs. rhyme detection) and the most lateralized among two semantic ("living" vs. "edible" categorization) tasks, within the dominant hemisphere for language. The reason of addressing this question was a practical one: to evaluate the…

Sixty children with reading ages 18 months or more below their chronological ages, were compared with a control group of the same size who had average or above average reading ages. Both groups completed a laterality questionnaire relating to different aspects of perception and handedness. (Editor)

A study sought to ascertain the effect, if any, exposure to different temperatures would have on an individual's ability to discriminate between different tactile stimuli. Ten young adult males were repeatedly subjected to emersion of their dominant hand in water ranging in temperature from ice, to 105 degrees Fahrenheit (F), in increments of 15…

This document discusses the problem of teachers who teach primarily to the left hemisphere of the brain, not allowing the right-brain dominant student to expand his creative ability. It presents information about brain structure and function for educators. A glossary of 25 terms is provided with sources of the definitions. Annotations summarizing…

Handedness, or laterality, is discussed and research study concerned with the psychological evaluation of left-handed children is reported. (DT)

The extent to which sex differences on a mental rotation test were related to ocular dominance, handedness, and familial handedness was explored. The Vandenberg revision of the Shepard-Metzlar mental rotation test was administered to 206 college students. The test consisted of 20 criterion figures, each followed by two correct and two incorrect…

This report describes the movement characteristics of a three year old boy and girl as they performed a one-handed striking task over a one year period. Observations were made at 4 month intervals as part of a filmed, longitudinal study on the development of motor patterns. The one-handed striking pattern was elicited by asking the children to hit…

Examined were electroencephalogram (EEG) asymmetries during the presence of discrete facial signs of emotion among 10-month-old infants who were tested in a standard stranger- and mother-approach paradigm that included a brief separation from mother. Data underscore the usefulness of EEG measures of hemispheric activation in differentiating among…

Compared overall performance level for both hands combined (OPL) with several lateral deviation measures calculated from scores on a composite finger localization task (FLT) and a speeded pegboard task (SPT) administered to 92 kindergarten entrants. Results support the view that OPL and lateral deviation are not mutually confounded and, in large…