The linguistic role of the right hemisphere in bilingual language processing was examined. Ten right-handed Spanish-English bilinguals were tachistoscopically presented with mixed lists of Spanish and English words to either the right or left visual field and asked to identify the language and the word presented. Five of the subjects identified…

In an effort to explore S. Orton's "intergrading" hypothesis, six developmental dyslexics (ages 16 to 47) and four good readers were tested on measures of interhemispheric coordination. Dyslexics showed reduced laterality bias and longer response latencies to bihemifield stimuli. (Author/DB)

Investigated hand preference using a questionnaire. Respondents were divided into: right-handers (N=523), left-handers (N=412), and impossible to classify (N=42). Items were subjected to a cluster analysis. Results show a clear grouping of items for left-handers and a vaguely similar grouping for right-handers, characterized by the muscle groups…

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…

This study, involving adults with and without mental retardation and mental age-matched children, employed a lateralized presentation of Stroop color words, neutral words, and the subject's first name. Individuals with mental retardation experienced difficulty in effortful processing (inhibiting the reading response on the Stroop trials) and in…

This study of 34 adults with Down's syndrome found that right-handed subjects exhibited no lateral advantage in dihaptic shape-matching, whereas left-handed subjects displayed an expected left-hand advantage. In a visual field dot enumeration task, both groups exhibited left-field superiority. Results indicate that subjects' atypical cerebral…

Spatial and sequential tasks performed both independently and jointly were compared for 40 undergraduates grouped by sex and dominant hand. When both tasks were performed simutaneously, there was a significant advantage for right-handers and a slight advantage for males. This was attributed to hemispheric interference left-handers experienced.…

In an investigation using auditory evoked responses (AERs) to compare strongly left- and strongly right-handed adults in their hemispheric processing of speech materials, it was anticipated that AERs would reflect a bilateralization in the left-handed group of subjects and marked hemispheric differences in the right-handed group. In addition, the…

Recent research in adult pronunciation of foreign languages has assigned a significant role to affective variables. It has been shown that certain language functions, including many aspects of pronunciation, are handled by the right brain hemisphere. An experiment was conducted to study the extent to which the right hemisphere might be activated…

Naval recruits attending a remedial reading program were compared to regular recruits on verbal, nonverbal, demographic, and eye-hand laterality measures. Verbal intelligence scores on the General Classification Test differentiated best between the two groups. Findings on race and laterality factors are also discussed. (Author/SJL)

This study measured test-retest reliabilities and interrelationships of four common measures of lateral dominance: dowel balancing, peg placement, grip strength, and conjugate lateral eye movement. Moderate reliabilities for all measures except grip strength were obtained. Subjects' sex may be an important reliability variable. Correlations among…

A study of 12 patients with left-hemisphere damage (LHD) and aphasia, 10 with right-hemisphere damage (RHD), and 10 controls, sought to identify phonemic and emphatic stress contrasts. Individuals with LHD were unable to identify phonemic stress contrasts with better-than-chance accuracy. Individuals with RHD performed better than those with LHD.…

Twenty schizophrenics with flat affect, 19 right-brain-damaged patients, and 21 normal controls were compared on a task of facial emotional expression. Compared to controls, both patient groups were judged as less expressive and displaying more negative than positive emotion. Patients seemed to have difficulty with the expression of positive…