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Test‐Retest Reliability of Contingent Valuation with Independent Sample Pretest and Posttest Control Groups
Author(s) -
Teisl Mario F.,
Boyle Kevin J.,
McCollum Daniel W.,
Reiling Stephen D.
Publication year - 1995
Publication title -
american journal of agricultural economics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.949
H-Index - 111
eISSN - 1467-8276
pISSN - 0002-9092
DOI - 10.2307/1243229
Subject(s) - reliability (semiconductor) , recall , psychology , contingent valuation , statistics , test (biology) , valuation (finance) , sample (material) , econometrics , control (management) , social psychology , economics , mathematics , computer science , cognitive psychology , willingness to pay , artificial intelligence , accounting , paleontology , power (physics) , chemistry , physics , chromatography , quantum mechanics , biology , microeconomics
Test‐retest, the standard method used to investigate reliability of contingent valuation, is limited because when the time period between the two surveys is relatively short the study may exhibit testing recall. Conversely, when the time between the two surveys increases there is an increased chance the true value will change. The test‐retest design cannot isolate these effects. Independent pretest and posttest control groups allow testing of reliability even when recall occurs or the true value changes. Using this design, we found ex post estimates of Hicksian surplus are reliable regardless of whether respondents have direct experience with an activity.