Bleichrodt Han, Pinto Prades Jose Luis
Department of Economics & iMTA/iBMG, Erasmus University, Rotterdam, The Netherlands.
Health Econ. 2009 Jun;18(6):713-26. doi: 10.1002/hec.1405.
A central assumption in health utility measurement is that preferences are invariant to the elicitation method used. This assumption is challenged by preference reversals. Previous studies have observed preference reversals between choice and matching tasks and between choice and ranking tasks. We present a preference reversal that is entirely derived from choices, the basic primitive of economics and utility theory. The preference reversal was observed in two studies regarding health states after stroke. Both studies involved large representative samples from the Spanish population, interviewed professionally, and face-to-face. Possible explanations for the preference reversal are the anticipation of disappointment and elation in risky choice and the impact of ethical considerations about the value of life.
健康效用测量中的一个核心假设是，偏好对于所使用的诱导方法是不变的。这一假设受到偏好逆转的挑战。先前的研究已经观察到在选择与匹配任务之间以及选择与排序任务之间存在偏好逆转。我们提出了一种完全源自选择的偏好逆转，而选择是经济学和效用理论的基本要素。在两项关于中风后健康状态的研究中观察到了这种偏好逆转。两项研究都涉及来自西班牙人群的大型代表性样本，采用专业的面对面访谈。对偏好逆转的可能解释包括在风险选择中对失望和兴奋的预期，以及关于生命价值的伦理考量的影响。
