"One basic problem in business-cycle studies is how to deal with nonstationary time series. The market economy is an evolutionary system. Economic time series therefore contain stochastic components that are necessarily time dependent. Traditional methods of business cycle analysis, such as the...

Using a unique sample of new Ph.D. economists in 1987 and 1997, we examine how job seekers and their employers alter their search strategies in strong versus weak markets. The 1987 academic market was strong while the 1997 market was much weaker. A multimarket theory of optimal search suggests...

"When monetary policies are endogenous, the conventional VAR approach for detecting the effect of monetary policies is powerless. This paper proposes to test the implication of monetary policies along a different dimension. That implication is to exploit the policy induced exogeneity of...