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Four-decision tests for stochastic dominance, with an application to environmental psychophysics
Stockholm University, Faculty of Social Sciences, Department of Psychology, Perception and psychophysics.
Number of Authors: 42019 (English)In: Journal of mathematical psychology (Print), ISSN 0022-2496, E-ISSN 1096-0880, Vol. 93, article id 102281Article in journal (Refereed) Published
Abstract [en]

If the survival function of a random variable X lies to the right of the survival function of a random variable Y, then X is said to stochastically dominate Y. Inferring stochastic dominance is particularly complicated because comparing survival functions raises four possible hypotheses: identical survival functions, dominance of X over Y, dominance of Y over X, or crossing survival functions. In this paper, we suggest four-decision tests for stochastic dominance suitable for paired samples. The tests are permutation-based and do not rely on distributional assumptions. One-sided Cramer-von Mises and Kolmogorov-Smirnov statistics are employed but the general idea may be utilized with other test statistics. The power to detect dominance and the different types of wrong decisions are investigated in an extensive simulation study. The proposed tests are applied to data from an experiment concerning the individual's willingness to pay for a given environmental improvement. 

Place, publisher, year, edition, pages
2019. Vol. 93, article id 102281
Keywords [en]
stochastic dominance, stochastic ordering, four-hypothesis test, permutation test, nonparametric approach, environmental psychology
National Category
Mathematics Psychology
Research subject
Psychology
Identifiers
URN: urn:nbn:se:su:diva-177616DOI: 10.1016/j.jmp.2019.102281ISI: 000501403100004OAI: oai:DiVA.org:su-177616DiVA, id: diva2:1384632
Available from: 2020-01-10 Created: 2020-01-10 Last updated: 2020-01-20Bibliographically approved

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