Kahneman, D.

utility instant utility instant duration axiom episode outcome evaluation decision experience subject journal measure value patient pleasure kahneman decision utility function experiment choice trial preference analysis bentham economic interval concatenation point theorem hedonic peak-end study measurement procedure instant utilities integral people duration neglect scale section retrospective result monotonicity axiom 3 example situation question second level mj 2 1 value function figure separability hedonic value rating moment effect consumption period neglect discomfort condition model representation correlation peak-end rule retrospective evaluations assumption aversive time points research retrospective evaluation signi participant disutility memory psychology treatment principle