What to Blame? Self-Serving Attribution Bias with Multi-Dimensional Uncertainty
研究在多维不确定性环境中，人们如何利用额外自由度进行自利归因，实验发现当反馈涉及个人与队友能力时信念更新有偏，而随机因素时则无偏，且人类行为导致的偏差更大。
Abstract People often receive feedback influenced by external factors, yet little is known about how this affects self-serving biases. Our theoretical model explores how multi-dimensional uncertainty allows additional degrees of freedom for self-serving bias. In our primary experiment, feedback combining an individual’s ability and a teammate’s ability leads to biased belief updating. However, in a follow-up experiment with a random fundamental replacing the teammate, unbiased updating occurs. A validation experiment shows that belief distortion is greater when outcomes originate from human actions. Overall, our experiments highlight how multi-dimensional environments can enable self-serving biases.