Economists working with numerical solutions to the optimal consumption/saving problem under uncertainty have long known that there are quantitatively important interactions between liquidity constraints and precautionary saving behavior. This paper provides the analytical basis for those...

Cognitive Economics is the economics of what is in people's minds. It is a vibrant area of research (much of it within Behavioral Economics, Labor Economics and the Economics of Education) that brings into play novel types of data--especially novel types of survey data. Such data highlight the...

In ranking fiscal stimulus programs, it is useful to focus on the ratio of extra aggregate demand to extra national debt that results. This note argues that (because of repayment after the end of a recession) "national lines of credit"-that is, government-issued credit cards with countercyclical...

This paper constructs a dynamic macroeconomic model with less- than-perfect price flexibility which has a real side consistent with Real Business Cycle Theory, augmented by investment adjustment costs, increasing returns to scale, and a new, flexible formalization of imperfect competition. A new...

At least three types of precautionary motives are directly relevant to an agent's demand for assets. (I.) The precautionary saving motive, or prudence, can cause an agent to respond to a risk by accumulating more wealth. (II.) The desire to moderate total exposure to risk, or temperance, can...

The marginal propensity to consume out of wealth is important for evaluating the effects of taxation on consumption, assessing the possibility of multiple equilibria due to aggregate demand spillovers, and explaining observed variations in consumption. It is also a component of the interest...

Efficiency wage models of the effort elicitation type have important implications for labor market dynamics. These models have a wide array of discontinuous sunspot equilibria driven by extraneous variables, in addition to well-behaved equilibria characterized by continuous, slowly adjusting...

The theory of precautionary saving is shown in this paper to be isomorphic to the Arrow-Pratt theory of risk aversion, making possible the application of a large body of knowledge about risk aversion to precautionary saving, and more generally, to the theory of optimal choice under risk. In...

Since the foundational work of Keynes (1936), macroeconomists have emphasized the importance of agents' expectations in determining macroeconomic outcomes. Yet in recent decades macroeconomists have devoted almost no effort to modeling actual empirical expectations data, instead assuming all...

This paper argues that the modern stochastic consumption model, in which impatient consumers face uninsurable labor income risk, matches Milton Friedman's (1957) original description of the Permanent Income Hypothesis much better than the perfect foresight or certainty equivalent models did. The...