The Influence of Working Memory and Types of Risk-Taking on Affective Decision-Making

Abstract

Abstract: The purpose of the present study is to see the influence of working memory on affective decision-making performance, and to reveal the mechanism behind the effects of working memory and types of risk-taking. This research took a 2(Types of risk-taking: risk preference/risk aversion)×2(Working memory load: load/non-load)mixed experimental design. The dependent variable was participants' grades of Iowa Gambling Task(IGT), which is the classic paradigm of affective decision-making in a laboratory environment. The participants are 88 university students. The results showed that high working memory load significantly declined the performance of IGT; working memory and the types of risk-taking had an interaction effect. Therefore, for participants of risk preference type, the interference of working memory on sensibility to the loss in IGT was not significant; while for the risk aversion type, when the working memory was occupied, the grades were worse. Overall, findings suggested that, both working memory and the types of risk-taking have influence on individuals' affective decision-making.

Key words: working memory, types of risk-taking, Iowa Gambling Task, affective decision-making

摘要： 本研究采用爱荷华赌博任务（Iowa Gambling Task, IGT）范式,探究工作记忆在情感决策过程中的作用,以及风险取向类型与工作记忆的作用机制。以88名大学生为被试,采用自变量2（风险取向类型: 风险偏好/风险规避）×2（工作记忆负荷: 无负荷/有负荷）的混合实验设计。结果发现,高工作记忆负荷会降低被试的IGT成绩;工作记忆负荷和风险取向类型存在交互作用,即对于风险偏好型被试,工作记忆负荷对IGT损失敏感性的干扰并不明显,但对于风险规避型被试,高工作记忆负荷时的IGT损失敏感性比低工作记忆负荷时的更差。这些结果表明工作记忆和风险取向均会影响个体的情感决策。

关键词: 工作记忆, 风险取向类型, 爱荷华博弈任务, 情感决策

CLC Number:

B842.6

Zhou Cancan, You Xuqun, Qi Zhenbang, Ning Hong, Yuan Shuangshuang, Gan Ping. The Influence of Working Memory and Types of Risk-Taking on Affective Decision-Making[J]. Studies of Psychology and Behavior, 2017, 15(1): 128-135.

周灿灿, 游旭群, 漆振邦, 宁红, 袁双双, 甘萍. 工作记忆和风险取向类型对情感决策的影响*[J]. 心理与行为研究, 2017, 15(1): 128-135.

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