Multiple-Unit Holdings Yield Attenuated Endowment Effects

Previous endowment effect experiments have examined circumstances in which people encounter a single unit of a good e.g., one chocolate. We contrast single-unit treatments with multiple-unit treatments in which participants encounter several units of a good e.g., five chocolates. We observe endowment effects of typical magnitude for singleton holdings but attenuated endowment effects for multiple-unit holdings. Moreover, endowment effects consistently arise for singletons even as the definition of a unit is altered. For instance, participants holding one piece of chocolate show an endowment effect of standard size, but so do participants holding one box of chocolates. Yet the box contains about 20 individual pieces of chocolate, and participants given that many separate pieces show a substantially attenuated endowment effect. We thus propose the property of “unit dependence”: the definition of a unit can change, but contingent on any given definition, a pronounced endowment effect may emerge for singletons but not multiples. This paper was accepted by Teck Ho, decision analysis.

[1]  Ido Erev,et al.  The rejection of attractive gambles, loss aversion, and the lemon avoidance heuristic , 2008 .

[2]  D. Ariely,et al.  When Do Losses Loom Larger than Gains? , 2005 .

[3]  David Genesove,et al.  Loss Aversion and Seller Behaviour: Evidence from the Housing Market , 2001 .

[4]  Deborah A. Small,et al.  Heart Strings and Purse Strings , 2004, Psychological science.

[5]  A. Tversky,et al.  Prospect theory: analysis of decision under risk , 1979 .

[6]  Paul Slovic,et al.  “If I look at the mass I will never act”: Psychic numbing and genocide , 2007, Judgment and Decision Making.

[7]  A. Tversky,et al.  Rational choice and the framing of decisions , 1990 .

[8]  Marcel Zeelenberg,et al.  Option Attachment: When Deliberating Makes Choosing Feel Like Losing. , 2003 .

[9]  R. Thaler Toward a positive theory of consumer choice , 1980 .

[10]  Deborah A. Small,et al.  Sympathy and callousness: The impact of deliberative thought on donations to identifiable and statistical victims. , 2007 .

[11]  A. Tversky,et al.  Prospect theory: an analysis of decision under risk — Source link , 2007 .

[12]  Ilana Ritov,et al.  The singularity effect of identified victims in separate and joint evaluations , 2005 .

[13]  A. Drolet Inherent rule variability in consumer choice: Changing rules for change's sake , 2002 .

[14]  Mary Frances Luce,et al.  When Does Choice Reveal Preference? Moderators of Heuristic versus Goal‐Based Choice , 2009 .

[15]  R. Thaler,et al.  Myopic Loss Aversion and the Equity Premium Puzzle , 1993 .

[16]  I. Simonson,et al.  Choice Based on Reasons: The Case of Attraction and Compromise Effects , 1989 .

[17]  J. Peck,et al.  The Effect of Mere Touch on Perceived Ownership , 2009 .

[18]  E. Yechiam,et al.  Loss aversion, diminishing sensitivity, and the effect of experience on repeated decisions† , 2008 .

[19]  J. Knetsch The Endowment Effect and Evidence of Nonreversible Indifference Curves. , 1989 .

[20]  William D. Schulze,et al.  The Disparity Between Willingness to Accept and Willingness to Pay Measures of Value , 1987 .

[21]  Katherine Burson,et al.  More for the Many: The Influence of Entitativity on Charitable Giving , 2013 .

[22]  A. Tversky,et al.  The framing of decisions and the psychology of choice. , 1981, Science.

[23]  D. Kahneman,et al.  Experimental Tests of the Endowment Effect and the Coase Theorem , 1990, Journal of Political Economy.

[24]  Rebecca K. Ratner,et al.  Choosing less-preferred experiences for the sake of variety. , 1999 .

[25]  Terrance Odean,et al.  Are Investors Reluctant to Realize Their Losses? , 1996 .

[26]  Eric J. Johnson,et al.  Aspects of Endowment: A Query Theory of Value Construction , 2007, Journal of experimental psychology. Learning, memory, and cognition.

[27]  Ray Weaver,et al.  A Reference Price Theory of the Endowment Effect , 2012 .

[28]  Alvin E. Roth,et al.  The effect of adding a constant to all payoffs: experimental investigation, and implications for reinforcement learning models , 1999 .