The general equilibrium models in this paper, with complete markets, can give the major features of business cycles. The models include real investment, but information is costless and is available to everyone at the same time. Fluctuations in the match between resources and wants across many...

Using a simple conventional model with additive separable utility and constant elasticity, we can explain mean reversion and consumption smoothing. The model uses the price of risk and wealth as state variables, but has only one stochastic variable. The price of risk rises temporarily as wealth...