Information Cascades and Social Learning
综述了过去30年信息级联与社会学习的理论，探讨了观察他人如何影响信念更新，导致信息聚合或学习阻塞，并指出未来研究方向。
Social learning is the updating of beliefs based on observation of others. Such observation can lead to efficient aggregation of information, but also to inaccurate decisions, fragility of mass behaviors, and, in the case of information cascades, to complete blockage of learning. We review the theory of information cascades and social learning and discuss important themes, insights, and applications of this literature as it has developed over the last 30 years. We also highlight open questions and promising directions for further theoretical and empirical exploration.