Why contextual preference reversals maximize expected value
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Why contextual preference reversals maximize expected value. / Howes, Andrew; Warren, Paul A.; Farmer, George D.; El-Deredy, Wael; Lewis, Richard L.
In: Psychological Review, Vol. 123, No. 4, 07.2016, p. 368-391.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Why contextual preference reversals maximize expected value
AU - Howes, Andrew
AU - Warren, Paul A.
AU - Farmer, George D.
AU - El-Deredy, Wael
AU - Lewis, Richard L.
PY - 2016/7
Y1 - 2016/7
N2 - Contextual preference reversals occur when a preference for one option over another is reversed by the addition of further options. It has been argued that the occurrence of preference reversals in human behavior shows that people violate the axioms of rational choice and that people are not, therefore, expected value maximizers. In contrast, we demonstrate that if a person is only able to make noisy calculations of expected value and noisy observations of the ordinal relations among option features, then the expected value maximizing choice is influenced by the addition of new options and does give rise to apparent preference reversals. We explore the implications of expected value maximizing choice, conditioned on noisy observations, for a range of contextual preference reversal types—including attraction, compromise, similarity, and phantom effects. These preference reversal types have played a key role in the development of models of human choice. We conclude that experiments demonstrating contextual preference reversals are not evidence for irrationality. They are, however, a consequence of expected value maximization given noisy observations. (PsycINFO Database Record (c) 2016 APA, all rights reserved)
AB - Contextual preference reversals occur when a preference for one option over another is reversed by the addition of further options. It has been argued that the occurrence of preference reversals in human behavior shows that people violate the axioms of rational choice and that people are not, therefore, expected value maximizers. In contrast, we demonstrate that if a person is only able to make noisy calculations of expected value and noisy observations of the ordinal relations among option features, then the expected value maximizing choice is influenced by the addition of new options and does give rise to apparent preference reversals. We explore the implications of expected value maximizing choice, conditioned on noisy observations, for a range of contextual preference reversal types—including attraction, compromise, similarity, and phantom effects. These preference reversal types have played a key role in the development of models of human choice. We conclude that experiments demonstrating contextual preference reversals are not evidence for irrationality. They are, however, a consequence of expected value maximization given noisy observations. (PsycINFO Database Record (c) 2016 APA, all rights reserved)
KW - expected value maximization
KW - preference reversals
KW - rationality
KW - choice
U2 - 10.1037/a0039996
DO - 10.1037/a0039996
M3 - Article
VL - 123
SP - 368
EP - 391
JO - Psychological Review
JF - Psychological Review
SN - 0033-295X
IS - 4
ER -