Endowment Effect is defined as "the increased value of a good to an individual when the good becomes part of the individual's endowment" (Kahneman et al., 1990, p. 1326).
Brief quotations are reproduced for identification purposes under fair use / fair dealing doctrine
Kahneman, D., Knetsch, J. L., & Thaler, R. H. (1990). Experimental Tests of the Endowment Effect and the Coase Theorem. *The Journal of Political Economy*, *98*(6), 1325–1348. <https://doi.org/10.1086/261737>
Built on Loss Aversion (Kahneman & Tversky, 1979) Exact Definition & APA Citation
[Term Coining]
Thaler, R. (1980). Toward a positive theory of consumer choice. *Journal of Economic Behavior & Organization*, *1*(1), 39–60.
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