TY  - JOUR
TI  - A Simple Model of Herd Behavior
AU  - Abhijit Banerjee
PY  - 1992
JO  - The Quarterly Journal of Economics
DO  - 10.2307/2118364
UR  - https://doi.org/10.2307/2118364
AB  - We analyze a sequential decision model in which each decision maker looks at the decisions made by previous decision makers in taking her own decision. This is rational for her because these other decision makers may have some information that is important for her. We then show that the decision rules that are chosen by optimizing individuals will be characterized by herd behavior; i.e., people will be doing what others are doing rather than using their information. We then show that the resulting equilibrium is inefficient.
ER  -