Risk Preference Types, Limited Consideration, and Welfare

Risk Preference Types, Limited Consideration, and Welfare
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风险偏好类型、有限考虑和福利

DOI:
10.1080/07350015.2023.2239949
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发表时间:
2023
影响因子:
3
通讯作者:
Molinari, Francesca
Molinari, Francesca
中科院分区:
数学2区
文献类型:
--
作者:
Barseghyan, Levon;Molinari, Francesca

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当代理人通过购买大量的保险产品在多个保险范围(上下文)中做出选择时,我们给出了风险下混合决策模型的半非参数点识别的充分条件。作为第一个偏离相关文献,该模型允许两种偏好类型。在第一种情况下,代理人的行为根据标准的预期效用理论与CARA伯努利效用函数,与代理人特定的绝对风险厌恶系数,其分布是完全不确定的。在另一个,代理人的行为根据风险下的选择与一个参数的家庭失真函数,其中的参数是代理特定的,是从一个分布,是完全不确定的双重理论。在每一种偏好类型,该模型允许未观察到的异质性考虑集,后者形成在束水平的第二个偏离相关文献。我们的点识别结果依赖于观察到足够的变化,在不同的背景下,协变量,而不需要任何独立的变化,在一个单一的背景下,在替代品。我们估计模型的数据对家庭的免赔额的选择在两条线的财产保险,并使用的结果来评估假设的市场干预的福利影响的两条线的保险合并成一个。我们研究的作用,有限的考虑在调解这种干预的福利效果。
We provide sufficient conditions for semi-nonparametric point identification of a mixture model of decision making under risk, when agents make choices in multiple lines of insurance coverage (contexts) by purchasing abundle. As a first departure from the related literature, the model allows for two preference types. In the first one, agents behave according to standard expected utility theory with CARA Bernoulli utility function, with an agent-specific coefficient of absolute risk aversion whose distribution is left completely unspecified. In the other, agents behave according to the dual theory of choice under risk combined with a one-parameter family distortion function, where the parameter is agent-specific and is drawn from a distribution that is left completely unspecified. Within each preference type, the model allows for unobserved heterogeneity in consideration sets, where the latter form at the bundle level—a second departure from the related literature. Our point identification result rests on observing sufficient variation in covariates across contexts, without requiring any independent variation across alternatives within a single context. We estimate the model on data on households’ deductible choices in two lines of property insurance, and use the results to assess the welfare implications of a hypothetical market intervention where the two lines of insurance are combined into a single one. We study the role of limited consideration in mediating the welfare effects of such intervention.
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