Persistent shifts in equilibria are likely to arise in oligopolistic markets and may be detrimental to the measurement of conduct, related markups and intensity of competition. We develop a cointegrated VAR (vector autoregression) based approach to detect long-run changes in conduct when data is...

Intertemporal shifts in conduct, such as a transition from competitive to anti-competitive behavior, induce shifts in the firms’ equilibrium price configurations. Such shifts generate non-stationary price dynamics in addition to those which originate from exogenous fundamentals. We exploit...

A popular strategy for estimating output gaps is to anchor them to structural economic relationships. The resulting output gaps, however, are often highly sensitive to numerous auxiliary assumptions inherent in the approach. This complicates their use in policymaking. We illustrate the point...

This paper proposes an indirect method for making empirical inference on the elasticity of substitution between capital and labor. The idea is that estimates of the elasticity may be retrievable from theory derived behavioral equations, by conducting comparative statics with respect to this...

I apply the Johansen and Swensen (1999, 2004) method of testing exact rational expectations within the cointegrated VAR (Vector Auto-Regressive) model, to testing the New Keynesian (NK) model. This method permits the testing of rational expectation systems, while allowing for non-stationary...