The Relationship Between Risk Attitude and Strength of Preference: A Test of Intrinsic Risk Attitude
通过两年追踪253名农民的价格风险决策，发现风险态度与偏好强度呈指数而非线性关系，多数农民具有内在风险寻求倾向，且该态度在时间上稳定但跨期相关性低。
In a field study, the concept of intrinsic risk attitude is investigated. Intrinsic risk attitude concerns the relationship between risk attitude, measured by the utility function u(x), and strength of preference, measured by the value function v(x). We study farmers' decision-making vis-à-vis price risk and obtain assessments of risk attitude and strength of preference in two consecutive years in a sample of 253 respondents. This design enables us to investigate the temporal stability of intrinsic risk attitude. Our findings show that risk attitude and strength of preference are two distinctive constructs. More specifically, the hypothesis of a linear relationship between u(x) and v(x) is clearly rejected in favor of an exponential relationship. This exponential relationship implies that our respondents exhibit a constant absolute intrinsic risk attitude for different price levels, during a time period. Differences between respondents in direction and degree of intrinsic risk attitude are substantial and the majority of the respondents are intrinsically risk seeking. No statistically significant change in intrinsic risk attitude could be detected between the two years of measurement. However, the correlation between measures across time appears to be low. In the discussion, issues for further research are identified.