Mere ownership effect

The mere ownership effect is the observation that people who own a good tend to evaluate it more positively than people who do not.[1]

It is typically demonstrated in a paradigm in which some participants in an experiment are randomly assigned to own a good ("owners") by receiving it for free. Other participants are randomly assigned to simply evaluate the same good without receiving it. Participants who own the good typically rate it as more attractive or as liking it more than do participants who do not own it. It is not necessary to actually own a good to exhibit the mere ownership effect. Simply touching[2] or imagining that one owns a good[3] is enough to instantiate the mere ownership effect.

The mere ownership effect is often used as a case in which people show the endowment effect that cannot be parsimoniously explained by loss aversion.[4]

Origins

Two routes have been proposed to explain the mere ownership effect. Both rely on the association of a good with the self.[4]

Attachment theory
One set of theorists believe that these self-associations take the form of an emotional attachment to the good. Once an attachment has formed, the potential loss of the good is perceived as a threat to the self.[1][4][5]
Self-referential memory theory
Another set of theorists believe that ownership increases the perceived value of a good through a self-referential memory effect (SRE) – the better encoding and recollection of stimuli associated with the self-concept.[3][6] Attributes of a good may be more accessible to its owners than are other attributes of the transaction. Because most goods have more positive than negative features, this accessibility bias should result in owners more positively evaluating their goods than do non-owners.[4]

References
  1. Beggan, James K. (1992). "On the social nature of nonsocial perception: The mere ownership effect". Journal of Personality and Social Psychology. 62 (2): 229–237. CiteSeerX 10.1.1.586.2683. doi:10.1037/0022-3514.62.2.229.
  2. Brasel, S. Adam; Gips, James (2014-04-01). "Tablets, touchscreens, and touchpads: How varying touch interfaces trigger psychological ownership and endowment". Journal of Consumer Psychology. Sensory perception, embodiment, and grounded cognition: Implications for consumer behavior. 24 (2): 226–233. doi:10.1016/j.jcps.2013.10.003. S2CID 145501566.
  3. Kim, Kyungmi; Johnson, Marcia K. (2014-07-01). "Extended self: spontaneous activation of medial prefrontal cortex by objects that are 'mine'". Social Cognitive and Affective Neuroscience. 9 (7): 1006–1012. doi:10.1093/scan/nst082. ISSN 1749-5016. PMC 4090970. PMID 23696692.
  4. Morewedge, Carey K.; Giblin, Colleen E. (2015). "Explanations of the endowment effect: an integrative review". Trends in Cognitive Sciences. 19 (6): 339–348. doi:10.1016/j.tics.2015.04.004. PMID 25939336. S2CID 4619648.
  5. Shu, Suzanne B.; Peck, Joann (2011-10-01). "Psychological ownership and affective reaction: Emotional attachment process variables and the endowment effect". Journal of Consumer Psychology. Special Issue on the Application of Behavioral Decision Theory. 21 (4): 439–452. doi:10.1016/j.jcps.2011.01.002.
  6. Symons, Cynthia S.; Johnson, Blair T. (May 1997). "The self-reference effect in memory: A meta-analysis". Psychological Bulletin. 121 (3): 371–394. doi:10.1037/0033-2909.121.3.371. PMID 9136641.
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