Effects of cultural background and education on handedness

Ardila, Alfredo; Ardila, Olga Felisa Ardila; Bryden, M.P.; Ostrosky, Feggy; Rosselli, Mónica; Steenhuis, Runa E.

doi:10.1016/0028-3932(89)90013-4

Cited by 44 publications

(18 citation statements)

References 25 publications

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“…Naming of drawings by illiterates was also poor in the study by Lecours et al (1987). Those interested in finding norms to study illiterate subjects have discussed this aspect extensively (Ardila et al, 1989a;Rosseli et al, 1990). We also find important differences while standardizing the naming test of the Multilingual Aphasia Examination Battery (Benton, Hamsher, & Siven, 1994).…”

Section: Problems Of Visual Processingmentioning

confidence: 82%

“…There is now a robust body of evidence documenting differences between literate and illiterate subjects in performing a variety of tasks (Ardila, Ardila, Bryden, Ostrosky, Rosselli, & Steenhuis, 1989a;Ardila, Rosselli, & Ostrosky, 1992;Ardila, Rosselli, & Puente, 1994;Bornstein & Suga, 1988;Coppens, Parente & Lecours, 1998;Finlayson, Johnson, & Reitan, 1977;Heaton, Grant, & Mathews, 1986 ;Leckliter & Matarazzo, 1989;Lecours, Mehler, & Parente, 1987 ;Matute, 1986;Matute, Leal, Zarabozo, Robles, & Cedillo, 2000;Ostrosky, Ardila, Rosselli, Lopez-Arango, & Uriel-Mendoza, 1998;Ostrosky, Canseco, Quintanar, Navarro, & Ardila, 1985;Ostrosky, Quintanar, Canseco, Meneses, Navarro, & Ardila, 1986;Reis & Castro-Caldas, 1997a;Rosseli, 1993;Rosseli, Ardila, & Rosas, 1990). These behavioural differences between groups reflected certain biological differences that have also been documented CastroCaldas, Peterson, Reis, Stone-Elander, & Ingvar, 1998b;Petersson, Reis, Askelöf, Castro-Caldas, & Ingvar, 2000).…”

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confidence: 99%

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Targeting regions of interest for the study of the illiterate brain

Castro‐Caldas

2004

Int J Psychol

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T his paper reviews a work project that uses illiteracy as a tool to understand the way the brain adapts to information. The project follows the exploration of certain targets that can be identified with the functions of reading and writing, both from the functional and from the anatomical points of view. Results concerning visual processing, cross-modal operations (audiovisual and visuotactile), and interhemispheric crossing of information are reported. Studies with magnetoencephalography, with positron emission tomography, and with functional magnetic resonance provided evidence that the absence of school attendance at the usual age constitutes a handicap for the development of certain biological processes that serve behavioural functioning. Differences between groups of literate and illiterate subjects were found in several areas: while dealing with phonology a complex pattern of brain activation was only present in literate subjects; the corpus callosum in the segment where the parietal lobe fibres cross was thinner in the illiterate group; the parietal lobe processing of both hemispheres was different between groups; and the occipital lobe processed information more slowly in cases that learned to read as adults compared to those that learned at the usual age. Some behavioural studies suggest that there are other operations that can be explored from the image point of view.C et article fait la revue d'un projet d'étude qui utilise l'analphabétisme comme outil pour comprendre la façon dont le cerveau s'adapte à l'information. Le projet poursuit l'exploration de certaines cibles qui peuvent être identifiées avec les fonctions de lecture et d'écriture, à la fois du point de vue fonctionnel et anatomique. Les résultats concernant le traitement visuel, les opérations trans-modales (audiovisuelles et visuotactiles) et le passage inter-hémisphérique de l'information sont rapportés. Les études utilisant la magnéto-encéphalographie, la tomographie avec émission de positrons et la résonance magnétique fonctionnelle ont démontré que l'absence de scolarisation à l'â ge adéquat constitue un handicap pour le développement de certains processus biologiques servant au fonctionnement comportemental. Des différences entre les groupes de participants alphabètes et analphabètes furent soulevées : lorsque les participants font des tâ ches de phonologie, un patron complexe d'activation cérébrale est présent seulement chez les alphabètes; chez le groupe analphabète, le corps calleux est plus mince dans le segment où traversent les fibres du lobe pariétal; le traitement du lobe pariétal des deux hémisphères est différent entre les groupes; et le lobe occipital traite l'information plus lentement dans les cas de l'apprentissage de la lecture à l'â ge adulte comparativement à l'apprentissage de la lecture à l'â ge adéquat. Des études comportementales suggèrent que d'autres opérations pourraient être explorées du point de vue de l'image.E ste estudio revisa una línea de investigació n que ha utilizado al analfabetismo como una herrami...

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Section: Problems Of Visual Processingmentioning

confidence: 82%

mentioning

confidence: 99%

Targeting regions of interest for the study of the illiterate brain

Castro‐Caldas

2004

Int J Psychol

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“…However, their general position is that ambihanded behaviors are the result of either covert environmental influences or overt interventions, where deliberate attempts are made to shift an individual's natural sidedness. Research evidence from cross-cultural studies of various societies that place differing emphasis on the use of the fight hand, in addition to within-culture studies of individuals who report hand preference switch attempts, confirm that individuals who have experienced such influences tend to show more ambihanded patterns compared to those who have not (Ardila et aL, 1989;Harris, 1990;Porac and Buller, 1990;Porac et al, 1990;Teng et al, 1976). Environmental theories have also been used to explain the higher incidence of mixed handedness behaviors occurring among individuals generally classified as left-handed.…”

Section: Introductionmentioning

confidence: 88%

Genetic vs. environmental contributions to human handedness: Insights gained from studying individuals with unilateral hand injuries

Porac

1995

Behav Genet

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Four hundred eleven individuals who had suffered temporary unilateral hand injuries were assessed on five hand preference behaviors after their recovery. Measures of shifts to contralateral hand use experienced during and after the recovery period were taken. The best predictor of hand use shifts during the injury recovery period was whether the injury was to the preferred or nonpreferred hand. The incidence of postinjury contralateral shifts was low but was greater than that observed over a simulated injury period in a control group of 384 individuals who had not experienced a hand injury.

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“…However, there was no equal incidence of left-and right-hand preferences in deaf children in the present study. A decrease in the rate of left-handedness in the deaf may result from traditional and cultural backgrounds, as well as education (Ardila et al, 1989).…”

Section: Resultsmentioning

confidence: 99%

Handedness in Deaf and Normal Children

Dane

Gümüştekin

2002

International Journal of Neuroscience

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The rates of left-handedness were compared in 94 deaf and 104 normal children to test whether the rate of left-handedness is higher in children with congenital deafness than normals. Hand preference was assessed using "Edinburg Handedness Inventory." Of 104 normal children, 94 (90.39%) were right-handed and 10 (9.61%) were left-handed. Of 91 deaf children, 72 (79.12%) were right-handed and 19 (20.88%) were left-handed. The difference between the incidences of left-handedness between these groups was statistically significant: deaf children were more left-handed and less right-handed than their normal counterparts. These results suggest that the right-ear advantage in the normal population does not develop during early fetal period in congenitally deaf children.

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Effects of cultural background and education on handedness

Cited by 44 publications

References 25 publications

Targeting regions of interest for the study of the illiterate brain

Targeting regions of interest for the study of the illiterate brain

Genetic vs. environmental contributions to human handedness: Insights gained from studying individuals with unilateral hand injuries

Handedness in Deaf and Normal Children

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