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Consider a setting in which firms randomly discover new ideas that affect their products or services and implement only those ideas which increase current profit At the same time that firms are adapting their offerings consumers are searching among firms for the best match It is shown that...

Scientific progress is driven by innovation ?which serves to produce a diversity of ideas ?and imitation through a social network ?which serves to diffuse these ideas. In this paper, we develop an agent-based computational model of this process, in which the agents in the population are...

This paper considers dynamic time series binary choice models. It proves near epoch dependence and strong mixing for the dynamic binary choice model with correlated errors. Using this result, it shows in a time series setting the validity of the dynamic probit likelihood procedure when lags of...

Consider an observed binary regressor D and an unobserved binary variable D*, both of which affect some other variable Y. This paper considers nonparametric identification and estimation of the effect of D on Y, conditioning on D* = 0. For example, suppose Y is a person’s wage, the unobserved...

This paper presents a simple new method for estimating the size of ‘wealth effects?on aggregate consumption. The method exploits the well-documented sluggishness of consumption growth (often interpreted as ‘habits?in the asset pricing literature) to distinguish between short-run and long-run...

This paper seeks to understand the behavior of Greenspan’s Federal Reserve in the late 1990s Some authors suggest that the Fed followed a simple Taylor rule while others argue that it deviated from such a rule because it recognized that the New Economy permitted an easing of policy We find...

This paper provides an empirical assessment of the importance of sticky prices in accounting for the variations and the persistence in real exchange rates Vector autoregressions with five variables from two countries that always include the United States are estimated Restrictions are imposed to...

This paper characterizes collusive pricing patterns when buyers may detect the presence of a cartel. Buyers are assumed to become suspicious when observed prices are anomalous. We find that the cartel price path is comprised of two phases. During the transitional phase, price is generally rising...

We develop a dynamic general equilibrium model where workers can engage in search while on the job. We show that on-the-job search is a key component in explaining labor market dynamics in models of equilibrium unemployment. The model predicts fluctuations of unemployment, vacancies, and labor...