Comparing treatments to reduce hypothetical bias in choice experiments regarding organic food
比较了廉价谈话和诚实启动两种方法在减少有机食品选择实验中假设偏差的效果,发现两者均能降低支付意愿,且廉价谈话效果更显著。
Abstract Hypothetical bias is one of the strongest criticisms brought to stated preference methods. We evaluate and compare the use of Cheap Talk and Honesty Priming as methods to mitigate such bias. Our study analyses the demand for organic food products in the UK, and the results reveal a core of consumers with positive willingness to pay (WTP) for organic. However, when correcting for hypothetical bias, consumers appear to be willing to pay even more for other attributes. Most importantly, the results show that implementing mechanisms to correct for hypothetical bias are efficient to reduce WTP, with Cheap Talk having a higher overall significance than Honesty Priming.