Segal, Uzi; Spivak, Avia - In: Economic Theory 9 (1996) 1, pp. 179-183
First-order risk aversion happens when the risk premium a decision maker is willing to pay to avoid the lottery $t\cdot {\tilde \epsilon }, E[{\tilde \epsilon }]=0,$ is proportional, for small t, to t. Equivalently, $\partial \pi /\partial t\mid_{t=0^{+}} 0.$ We show that first-order risk...