Opportunity Cost Neglect Attenuates the Effect of Choices on Preferences
通过三个实验发现，当机会成本在选择时被明确提示，人们对选中和放弃选项的评价差距更大；而忽视机会成本会削弱这种选择后偏好变化。
The idea that choices alter preferences has been widely studied in psychology, yet prior research has focused primarily on choices for which all alternatives were salient at the time of choice. Opportunity costs capture the value of the best forgone alternative and should be considered as part of any decision process, yet people often neglect them. How does the salience of opportunity costs at the time of choice influence subsequent evaluations of chosen and forgone options? In three experiments, we found that there was a larger postchoice spread between evaluations of focal options and opportunity costs when opportunity costs were explicit at the time of choice than when they remained implicit.