Sex-Differences, Handedness, and Lateralization in the Iowa Gambling Task
Sex-Differences, Handedness, and Lateralization in the Iowa Gambling Task
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爱荷华州赌博任务中的性别差异、惯用手和偏侧化
DOI：
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发表时间：
2016
影响因子：
3.8
通讯作者：
Varsha Singh
中科院分区：
文献类型：
--
作者：
Varsha Singh
在一个广泛使用的决策任务-爱荷华州赌博任务(IGT)中，男性的表现被观察到优于女性，并被归因于右侧化(即右半球优势)。目前尚不清楚情感和运动偏侧化的性别差异是否对IGT的性别特异性偏侧化有影响，具体地说，IGT的性别表现差异是随着右利手的变化还是随着情感的偏侧化(决策价和价位定向动机)的变化而变化。本研究(N=320；160名男性)考察了右撇子(右利手与非右利手)作为运动偏侧化的测量，决策效价(奖惩)和任务动机的价导性(价位定向与非定向指令)的影响，作为情感偏侧化对IGT决策的测量。方差分析显示，男性和女性参与者在有利决策中都表现出价态诱导的不一致；然而，右撇子女性在奖励IGT中做出更多不利决定。这些结果表明，在右撇子男性中，IGT决策可能在很大程度上是右倾的，并表明性别和偏侧差异(运动和情感)对IGT决策的性别差异有影响。本文从认知的偏侧化和性别差异两个方面讨论了研究结果的意义。
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.
DOI：
10.1073/pnas.96.14.8301
发表时间：
1999-07-06
影响因子：
11.1
作者：
Garavan, H;Ross, TJ;Stein, EA
通讯作者：
Stein, EA
影响因子：
4.2
作者：
Verdejo-Garcia, Antonio;Benbrook, Amy;Bolla, Karen I.
通讯作者：
Bolla, Karen I.
影响因子：
14.5
作者：
Bechara, A;Tranel, D;Damasio, H
通讯作者：
Damasio, H