Threshold events are discrete events triggered when an observable continuous variable passes a known threshold. We demonstrate how to use threshold events as identification strategies by revisiting the evidence in Rauh (2006) that mandatory pension contributions cause investment declines. Rauh's...

Cities exist because of the productivity gains arising from clustering production and workers, a process called agglomeration. How important is agglomeration for aggregate growth? This paper constructs a dynamic stochastic general equilibrium model of cities and uses it to estimate the effect of...

We study how the delisting of a firm's stock, and the accompanying drop in liquidity, causally affects a firm's real economic decisions. Although delisting is endogenous, we identify a causal effect by using regression discontinuity design (RDD). This technique suits the delisting problem...

Welch (2013) critiques recent work in dynamic corporate finance. We offer the contrasting view that there is no logical reason to dismiss entire research methodologies, and that many methods can be useful. We explain why dynamic models and structural estimation are useful research tools, as well...