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A simplified and practical alternative way to recognise the role of household characteristics in determining an individual's preferences: the case of automobile choice

机译:识别家庭特征在确定个人偏好中的作用的一种简化且实用的替代方法:选择汽车

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摘要

It is common practice in choice modelling to include the socioeconomic characteristics of other members of a household in the utility expressions associated with the preferences of a particular individual. By including household descriptors, the analyst is assuming that other household members can influence the choices made by the household as if the preference weights (or marginal utilities) are reflective of equal influence of all members of a household. In reality it is likely that there is a power relationship that underlies the contribution of the individual whose preferences are being studied and the contribution of other household members, typically proxied by a number of socioeconomic descriptors. In this paper we condition the individual and the household explanatory variables on an additional parameter that represents the influence or power that each agent has in the revelation of the preferences of a sampled individual. Using a data set of the stated choice of automobile fuel type (petrol, diesel, hybrid), we estimate a nonlinear model to identify the strength of the power relationship, and find that the power contribution of the household members to the individuals choice vary across alternatives. The model with the power relationship is found to be a statistical improvement and delivers substantially different elasticities than the traditional model with household characteristics.
机译:在选择模型中,通常的做法是在与特定个体的偏好相关的效用表达式中包括住户其他成员的社会经济特征。通过包含住户描述符,分析师假设其他住户成员可以影响住户所做的选择,就像偏好权重(或边际效用)反映了住户所有成员的平等影响一样。实际上,可能存在一种权力关系,这种权力关系是正在研究其偏好的个人的贡献和其他家庭成员的贡献的基础,通常由许多社会经济指标来代替。在本文中,我们将个人和家庭解释变量的条件设置为一个附加参数,该参数表示每个主体在揭示被采样个人的偏好方面的影响或能力。使用指定的汽车燃料类型(汽油,柴油,混合动力)选择的数据集,我们估计了一个非线性模型来确定权力关系的强度,并发现家庭成员对个人选择的权力贡献在不同情况下有所不同。备择方案。发现具有幂关系的模型具有统计学上的改进,并且与具有家庭特征的传统模型相比具有显着不同的弹性。

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