employment is the efficient unemployment rate, u*. We define u* as the unemployment rate that minimizes the nonproductive use of …). Accordingly, the efficient unemployment rate is the geometric average of the unemployment and vacancy rates: u* = √uv. We compute …

This study documents how job seekers update perceived job-finding prospects by unemployment duration and by learning … about aggregate unemployment. We find that job seekers perceive an 18% decline in their job-finding probability for each … additional month of unemployment, but perceive a higher job-finding probability when the aggregate unemployment rate is …

, that frictions (sand-in-the-wheels) may decrease unemployment and that the equilibrium is determined by two simple …

and perfectly flexible prices and wages, give rise to cyclical variations in unemployment whose character closely …

relates measured unemployment to vacancies and to excess demand. The model has a more sophisticated treatment of dynamics than … earlier disequilibrium models, and uses measured unemployment as an endogenous variable. Two of the error terms are assumed to … estimates computed in various ways are reasonable. The model is used to estimate the natural rate of unemployment as well as a …