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Sex-Differences, Handedness, and Lateralization in the Iowa Gambling Task

In a widely used decision-making task, the Iowa Gambling Task (IGT), male performance is observed to be superior to that of females, and is attributed to right lateralization (i.e., right hemispheric dominance). It is as yet unknown whether sex-differences in affect and motor lateralization have imp...

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Autor principal: Singh, Varsha
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4885871/
https://www.ncbi.nlm.nih.gov/pubmed/27303316
http://dx.doi.org/10.3389/fpsyg.2016.00708
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author Singh, Varsha
author_facet Singh, Varsha
author_sort Singh, Varsha
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description In a widely used decision-making task, the Iowa Gambling Task (IGT), male performance is observed to be superior to that of females, and is attributed to right lateralization (i.e., right hemispheric dominance). It is as yet unknown whether sex-differences in affect and motor lateralization have implications for sex-specific lateralization in the IGT, and specifically, whether sex-difference in performance in the IGT changes with right-handedness or with affect lateralization (decision valence, and valence-directed motivation). The present study (N = 320; 160 males) examined the effects of right-handedness (right-handedness vs. non-right-handedness) as a measure of motor lateralization, decision valence (reward vs. punishment IGT), and valence-directedness of task motivation (valence-directed vs. non-directed instructions), as measures of affective lateralization on IGT decision making. Analyses of variance revealed that both male and female participants showed valence-induced inconsistencies in advantageous decision-making; however, right-handed females made more disadvantageous decisions in a reward IGT. These results suggest that IGT decision-making may be largely right-lateralized in right-handed males, and show that sex and lateralized differences (motor and affect) have implications for sex-differences in IGT decision-making. Implications of the results are discussed with reference to lateralization and sex-differences in cognition.
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spelling pubmed-48858712016-06-14 Sex-Differences, Handedness, and Lateralization in the Iowa Gambling Task Singh, Varsha Front Psychol Neuroscience In a widely used decision-making task, the Iowa Gambling Task (IGT), male performance is observed to be superior to that of females, and is attributed to right lateralization (i.e., right hemispheric dominance). It is as yet unknown whether sex-differences in affect and motor lateralization have implications for sex-specific lateralization in the IGT, and specifically, whether sex-difference in performance in the IGT changes with right-handedness or with affect lateralization (decision valence, and valence-directed motivation). The present study (N = 320; 160 males) examined the effects of right-handedness (right-handedness vs. non-right-handedness) as a measure of motor lateralization, decision valence (reward vs. punishment IGT), and valence-directedness of task motivation (valence-directed vs. non-directed instructions), as measures of affective lateralization on IGT decision making. Analyses of variance revealed that both male and female participants showed valence-induced inconsistencies in advantageous decision-making; however, right-handed females made more disadvantageous decisions in a reward IGT. These results suggest that IGT decision-making may be largely right-lateralized in right-handed males, and show that sex and lateralized differences (motor and affect) have implications for sex-differences in IGT decision-making. Implications of the results are discussed with reference to lateralization and sex-differences in cognition. Frontiers Media S.A. 2016-05-31 /pmc/articles/PMC4885871/ /pubmed/27303316 http://dx.doi.org/10.3389/fpsyg.2016.00708 Text en Copyright © 2016 Singh. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Singh, Varsha
Sex-Differences, Handedness, and Lateralization in the Iowa Gambling Task
title Sex-Differences, Handedness, and Lateralization in the Iowa Gambling Task
title_full Sex-Differences, Handedness, and Lateralization in the Iowa Gambling Task
title_fullStr Sex-Differences, Handedness, and Lateralization in the Iowa Gambling Task
title_full_unstemmed Sex-Differences, Handedness, and Lateralization in the Iowa Gambling Task
title_short Sex-Differences, Handedness, and Lateralization in the Iowa Gambling Task
title_sort sex-differences, handedness, and lateralization in the iowa gambling task
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4885871/
https://www.ncbi.nlm.nih.gov/pubmed/27303316
http://dx.doi.org/10.3389/fpsyg.2016.00708
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