Time Series Evidence of Unemployment Flows: The Sample Period Matters
研究美国失业流入和流出动态及其与失业率的关系，通过诊断测试发现这些关系随时间变化，样本期选择会影响结论。
Worker flows to and from unemployment occur at all stages of the U.S. business cycle. The flows' dynamics affect the dynamics of the unemployment rate. This article studies the dynamics of unemployment flows and the unemployment rate and explores and documents changes over time. Rigorous diagnostic tests are used to investigate the structural stability of projectional relationships involving flows and the unemployment rate.