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Title: Testing for the survey mode effect on contingent valuation data quality: A case study of web based versus in-person interviews
Authors: Marta-Pedroso, Cristina 
Freitas, Helena 
Domingos, Tiago 
Keywords: Contingent valuation; Survey mode effect; Internet; Validity
Issue Date: 2007
Citation: Ecological Economics. 62:3-4 (2007) 388-398
Abstract: This paper addresses the lack of empirical evaluation of the use of web based surveys in the context of contingent valuation surveys. We compare, using a case study, in-person interviews with web based surveys regarding response rate, information additivity effects and respondents' attitudes towards paying. The web based survey had a much lower response (5.1%) than the in-person interviewing (84%). We find the web based contingent valuation surveys to be neither more susceptible to information additivity effects nor more prone to zero protest responses. We conclude in favor of the use of web based surveys, namely in Portugal, where the number of Internet users is rapidly increasing, although further research efforts are required on their use.
DOI: 10.1016/j.ecolecon.2007.02.005
Rights: openAccess
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais

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