We present a class of convex endogenous growth models and analyze their performance in terms of both growth and business cycle criteria. The models we study have close analogs in the real business cycle literature. We interpret the exogenous growth rate of productivity as an endogenous growth...

This Element is about agent-based macroeconomics in general, and in particular about a family of evolutionary, agent-based models (ABMs), which are called 'Schumpeter meeting Keynes' (or K+S). The K+S models knit together 'Schumpeterian' endogenous processes of innovation with 'Keynesian'...

We develop a theory of sectoral fluctuations driven by the propagation of demand shocks along supply chains with heterogeneous time-to-build production. We solve the model in closed form. Downstream producers respond directly to current demand. Upstream producers, due to time-to-build delays,...

First-order approximation methods are a standard technique for analyzing the local dynamics of dynamic stochastic general equilibrium (DSGE) models. Although for a wide class of DSGE models linear methods yield quite accurate solutions, some important economic issues such as portfolio choice and...

One of the statements of purpose of the American Recovery and Reinvestment Act (ARRA) was “to assist those most impacted by the recession.” To consider this facet, the ARRA is assessed along this dimension using the concept of risk-sharing. We estimate a trend-stationary autoregressive model...

In this paper I develop a model that focuses attention on the financial side of business cycles. Investors in this model separate into bondholders and stockholders based on differences in risk aversion that creates a conflict of interest problem for the future management of the representative...

This paper describes a parsimonious macro-finance model where contracts are the mechanism by which differentially risk averse bondholders and stockholders resolve a conflict of interest problem and confront the risks associated with future investment and financing decisions of a representative...

In this paper we provide a model of the macroeconomic implications of safe asset shortages. In particular, we discuss the emergence of a deflationary safety trap equilibrium with high risk premia. It is an acute form of a liquidity trap, in which the shortage of a specific form of assets, safe...