**Constant Absolute Risk Aversion (CARA)**

**Definition of Constant Absolute Risk Aversion (CARA):**
CARA utility is a class of utility functions. Also called exponential utility. Has the form,
for some positive constant a:

u(c)=-(1/a)e^{-ac}

"Under this specification the elasticity of marginal utility is equal to -ac, and the instantaneous elasticity of substitution is equal to 1/ac."

The coefficient of absolute risk aversion is a; thus the abbreviation CARA for Constant Absolute Risk Aversion. "Constant absolute risk aversion is usually thought of as a less plausible description of risk aversion than constant relative risk aversion" (that's the CRRA), but it can be more analytically convenient. (Econterms)

**Terms related to Constant Absolute Risk Aversion (CARA):**

**About.Com Resources on Constant Absolute Risk Aversion (CARA):**

*None*

**Writing a Term Paper? Here are a few starting points for research on Constant Absolute Risk Aversion (CARA):**

**Books on Constant Absolute Risk Aversion (CARA):**
*None*

**Journal Articles on Constant Absolute Risk Aversion (CARA):**
*None*