A Neuroeconomic Theory of Rational Addiction and Nonlinear Time-Perception
A Neuroeconomic Theory of Rational Addiction and Nonlinear Time-Perception
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DOI：
10.2139/ssrn.1878913
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发表时间：
2011-07
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影响因子：
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通讯作者：
Taiki Takahashi
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作者：
Taiki Takahashi
“理性成瘾”的神经经济学条件尚不清楚(Becker&Murphy，1988)。本文利用“双曲线”贴现的非线性时间感知理论，推导出了“理性成瘾”的条件，它在数学上等价于基于Tsallis统计量的Q指数跨期选择模型。结果表明：(1)时间认知的Arrow-Pratt度量对应于非理性程度(即，普雷莱克的“减少不耐烦”的时间折扣参数)；(2)成瘾者的理性由对数时间感知函数的无量纲化参数控制。此外，目前的理论说明了成瘾药物通过多巴胺能神经适应增加冲动的可能性，而不会增加不合理性。最后讨论了该模型在神经经济学研究中的应用方向。
Neuroeconomic conditions for "rational addiction" (Becker & Murphy 1988) have been unknown. This paper derived the conditions for "rational addiction" by utilizing a nonlinear time-perception theory of "hyperbolic" discounting, which is mathematically equivalent to the q-exponential intertemporal choice model based on Tsallis' statistics. It is shown that (i) Arrow-Pratt measure for temporal cognition corresponds to the degree of irrationality (i.e., Prelec's "decreasing impatience" parameter of temporal discounting) and (ii) rationality in addicts is controlled by a nondimensionalization parameter of the logarithmic time-perception function. Furthermore, the present theory illustrates the possibility that addictive drugs increase impulsivity via dopaminergic neuroadaptation without increasing irrationality. Future directions in the application of the model to studies in neuroeconomics are discussed.