It is demonstrated that J. M. Keynes in 1921 provided a complete decision rule that handles both the cases of nonlinear probability preferences and ambiguity or uncertainty. The 1979 Kahneman-Tversky approach deals only with risk (nonlinear probability preferences) and does not specify a decision rule. The 1985–1986 Einhorn-Hogarth anchoring and adjustment rule deals only with ambiguity or uncertainty and not risk. Only Keynes' rule does both.
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References
1.
BradyM. E. (1986) On the application of Keynes's logical probability approach. (Unpublished manuscript).
2.
BradyM. E. (1987a) J. M. Keynes's criteria for decision making under uncertainty and its relation to Prospect Theory. (Unpublished manuscript).
3.
BradyM. E. (1987b) Uncertainty in Keynes's A Treatise on Probability and the General Theory. (Unpublished manuscript).
4.
BradyM. E. (1988) J. M. Keynes's logical Bayesian, weighted monetary value approach to decision making under conditions of risk and uncertainty. (Unpublished manuscript).
5.
BradyM. E.LeeH. B. (1989a) Dynamics of choice behavior: The logical reaction between linear objective probability and nonlinear subjective probability. Psychological Reports, 64, 91–97.
6.
BradyM. E.LeeH. B. (1989b) Is there an Ellsberg-Fellner paradox? A note on its resolution. Psychological Reports, 64, 1087–1090.
7.
BradyM. E.LeeH. B. (1989c) Is there an Allais paradox? A note on its resolution. Psychological Reports, 64, 1223–1230.
8.
EinhornH. J.HogarthR. M. (1985) Ambiguity and uncertainty in probabilistic inference. Psychological Review, 92, 433–461.
9.
EinhornH. J.HogarthR. M. (1986) Decision making under ambiguity. Journal of Business, 59, S225–S250.
10.
EllsbergD. (1961) Risk, ambiguity, and the Savage axioms. Quarterly Journal of Economics, 75, 643–669.
11.
KahnemanD.TverskyA. (1979) Prospect Theory: An analysis of decision under risk. Econometrica, 47, 263–291.
12.
KeynesJ. M. (1921) A treatise on probability. London: Macmillan. (AMS Press Reprint, 1979).
13.
PopperK. (1959) The logic of scientific discovery. London: Routledge & Kegan-Paul.
