This study was designed to consider effects of age, sex, intelligence, lateral usage, and lateral awareness on young children's performance of spatial organization tasks. The sample consisted of 79 Caucasian, middle socioeconomic status nursery school children (mean C.A. 57.80, S.D. 4.47 months), 44 boys and 35 girls. Spatial organization was…

Suggests that since most newborn infants (65%) preferred to lie with their heads turned to the right, whereas 15% showed a distinct preference for the left, right head-orientation preference may contribute to the early development of right-handedness. (Author/SK)

Children as young as five years of age responded faster in a categorical task when information was initially presented to the left hemisphere, and faster in a coordinate task when information was initially presented to the right hemisphere. This finding provided evidence for the existence of distinct subsystems that compute categorial and…

This paper presents the preliminary results of a study conducted to investigate the differences in brain hemisphericity and learning styles on students' confidence in using the graphics calculator (GC) to learn mathematics. Data were collected from a sample of 44 undergraduate mathematics students in Malaysia using Brain-Dominance Questionnaire,…

Evidence suggests that the neurological substrate of emotional behavior is lateralized by brain hemisphere early in life. A study examined the emotional expressions of preterm infants, some of whom had unilateral periventrical echodensities (PVE), as a model for addressing this issue. The study population of 25 preterm infants was videotaped at 3…

This review of the literature looks at writing disabilities in the context of special education services provided within regular classrooms. A definition of learning disabilities as well as a discussion of effects of left and right brain dominance and of the steps of the writing process begin the paper. Among the findings of the research synthesis…

Research data in neurosurgery, neuropsychology, and neurolinguistics indicate that the human brain is lateralized toward one of two methods of information processing, and that, in most humans, the language bias appears to be a left hemisphere function, while the visiospatial bias belongs to the right. Furthermore, the left hemisphere seems to…

A study was undertaken to learn whether involvement of the brain's right hemisphere in auditory language processing, a phenomenon found in a previous study of Crow-English bilinguals, was language-specific. Alpha blocking response as measured by electroencephalography (EEG) was used as an indicator of brain activity. It was predicted that (1)…

A study of differential brain hemisphere involvement in second language acquisition is reported. The study examined the idea that the right hemisphere is progressively more involved the later the second language is acquired. Various techniques for monitoring hemispheric functioning are described, especially the Evoked Potential (EP) technique. In…

A review of research was conducted on the possibility of a sensitive period for the acquisition of native-like pronunciation in a second language, as well as on related questions concerning the universality of this phenomenon, age factors, biological versus cultural origins, and developmental psychology. The review showed variation in studies and…

This report was prepared to provide recommendations for testing adult dyslexics for employment purposes. Since the literature on dyslexia does not deal directly with this topic, the recommendations are based primarily on inferences from what is known about the diagnosis, etiology and treatment of dyslexia in children. A summary of the major…

The cognitive processing strategies of two groups of French-English bilinguals were studied by means of an auditory Stroop test designed to evaluate cerebral hemispheric involvement. An "early bilingual" group were bilingual before the age of five, and a "late bilingual" group were bilingual after the age of ten. Stimuli were…

Selected elements of reading and psychomotor characteristics among good and poor readers of divergent intellectual abilities were investigated. Four groups were selected for study: good and poor readers who were of average ability, and good and poor readers who were mentally handicapped. Approximately 160 subjects were identified for testing, and…

Relationships between brain-lesion location and behavior in 33 males and 31 females with unilateral lesions were studied. Statistical tests suggest that a single model can describe the relationships for females, but in males separate models of the relationships between lesion location, verbal intelligence quotient, and performance intelligence…

Retinoid signaling has been recently shown to be required for mnemonic functions in rodents. To dissect the behavioral and molecular mechanisms involved in this requirement, we have analyzed the spatial and recognition working memory in mice carrying null mutations of retinoid receptors RAR[subscript [beta]] and RXR[subscript [gamma]]. Double…