The relationship between reliability and size of willingness‐to‐pay values: a qualitative insight
通过定性研究，发现较高的支付意愿值需要受访者更多思考，因此更稳定；而较低的支付意愿值来自“可自由支配账户”，支出波动较大。
In a previous paper, the reliability of willingness-to-pay (WTP) values was found to be an increasing function of the size of WTP expressed. Here, the results of a qualitative exercise conducted alongside this quantitative study are presented. The results of this exercise suggest that higher WTP values may require more thought from the respondent which, in turn, gives them greater stability. At low levels of WTP, values appear to be taken from a 'discretionary account', where expenditure is more volatile. Caveats to this result, and suggestions for future research, are considered in the discussion.