Sad or Happy? The Effects of Emotions on Stated Preferences for Environmental Goods
通过实验室实验，研究不同情绪状态是否影响人们对环境商品（如沿海水质和鱼类种群）的陈述偏好和支付意愿，发现情绪变化对偏好参数和支付意愿无显著影响，与行为科学中的常见结论形成对比。
A substantial literature in behavioural science and psychology shows that emotions affect human choices and values. This paper investigates whether such emotional impacts are also present in stated choice experiments for environmental goods. If this were so, it would introduce an additional element of context dependence to the welfare measures derived from such methods, and would be at odds with the rational choice model underlying welfare economics. A laboratory experiment using three different emotion treatments was combined with a stated preference choice experiment concerned with changes in coastal water quality and fish populations in New Zealand. No statistically significant effects of changes in emotional state on estimated preference parameters, willingness to pay or the randomness of choices were found. The paper concludes by questioning, why such a contrast exists with empirical findings in behavioural science.