The work of Kahneman, Tversky and other psychologists has called the classical model of homo ?conomicus into question. Many studies conducted in psychology and economics have shown that classical economic expected utility theory does not satisfactorily describe human behaviour under risk. We...

We examine asset prices in a representative-agent model of general equilibrium. Assuming only that individuals are risk averse, we determine conditions on the changes in asset risk that are both necessary and sufficient for the asset price to fall. We show that these conditions neither imply,...