How important is the effect of the interest rate Zero Lower Bound (ZLB) on the severity of the U.S. Great Recession? We tackle this question using an incomplete markets New Keynesian model, with a ZLB on the nominal interest rate and a borrowing constraint tied to asset price. We solve the model...

Under limited commitment that prevents agents from pledging their future non-financial wealth, agents with incorrect beliefs always survive by holding on to their non-financial wealth. Friedman (1953)'s market selection hypothesis suggests that their financial wealth trends towards zero in the...

We extend the basic Schumpeterian endogenous growth model by allowing incumbents to undertake innovations to improve their products, while entrants engage in more "radical" innovations to replace incumbents. Our model provides a tractable framework for the analysis of growth driven by both entry...