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首页> 外文期刊>Physica, A. Statistical mechanics and its applications >A comparison between Tsallis's statistics-based and generalized quasi-hyperbolic discount models in humans
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A comparison between Tsallis's statistics-based and generalized quasi-hyperbolic discount models in humans

机译：Tsallis基于统计的模型与广义拟双曲折扣模型之间的比较

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摘要

Intertemporal choice has drawn attention in econophysics and neuroeconomics. Both impulsivity and inconsistency in intertemporal choice can be parametrized with a Tsallis's statistics-based q-exponential discount model. Although a recent neuroeconomic study has proposed a dual-self discounting model (a generalized quasi-hyperbolic discounting), no study to date has examined the relationship between the q-exponential and quasi-hyperbolic models. We empirically estimated the inconsistency parameter 1-q in the q-exponential discount function and the parameter of an internal conflict between dual selves in intertemporal choice by humans. We observed that (i) the inconsistency parameter in the q-exponential model is positively related to a conflict between selves within a subject and (ii) q-exponential discounting better fits group data, while quasi-hyperbolic discounting better fits individual data. Our results indicate that (i) inconsistent intertemporal decision-makers may experience strong internal conflict during intertemporal choice behavior, and (ii) the q-exponential and the quasi-hyperbolic discount models should respectively be utilized for group and individual data. The usefulness of the q-exponential and the quasi-hyperbolic in studies of addiction and economic behavior is discussed.
机译：跨期选择引起了经济学和神经经济学的关注。跨期选择的冲动性和不一致性都可以用Tsallis基于统计的q指数折扣模型来参数化。尽管最近的一项神经经济学研究提出了双重自我贴现模型（广义拟双曲线贴现），但迄今为止，尚无研究检验q指数模型与拟双曲线模型之间的关系。我们凭经验估计了q指数折现函数中的不一致参数1-q和人类在时间间选择中对偶自我之间的内部冲突参数。我们观察到（i）q指数模型中的不一致参数与主体内自我之间的冲突成正相关，并且（ii）q指数折扣更适合组数据，而拟双曲线折扣更适合单个数据。我们的结果表明：（i）不一致的跨期决策者在跨期选择行为中可能会遇到强烈的内部冲突，并且（ii）q指数模型和准双曲线折扣模型应分别用于组和个人数据。讨论了q指数和拟双曲线在成瘾和经济行为研究中的有用性。

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