Chickens, Eggs, and Causality, or Which Came First?
基于美国时间序列数据，发现鸡蛋到鸡的单向因果关系，为经济学和计量经济学研究者提供因果推断的实证案例。
Abstract Time‐series evidence from the United States indicates unidirectional causality from eggs to chickens.