The social valuation of income: a survey approach

David John Evans, Erhun Kula and Yoko Nagase

Journal of Economic Studies, 2014, vol. 41, issue 6, 808-820

Abstract: Purpose - – The purpose of this paper is to estimate survey-based values of the elasticity of marginal social valuation of income, an important welfare parameter in cost-benefit analysis. Design/methodology/approach - – A model relating equity welfare weights to income is developed, and iso-elasticity of marginal valuation of income is tested using survey data obtained from a sample of Turkish politicians who are instrumental in policy making. Findings - – Based on the survey feedback, formal statistical testing indicates that Turkish politicians, regardless of party allegiance, reveal preferences consistent with an iso-elastic marginal social valuation of income. The estimated value of the elasticity measure is close to unity for each of the political parties. Originality/value - – The originality of the paper is in terms of the survey method used to obtain from Turkish politicians estimates of the marginal social valuation of income. This welfare parameter is needed in the calculation of both social discount rates and welfare weights. The paper will be of interest to academics in the field of welfare economics as well as to practitioners involved in the appraisal of social projects and policies.

Keywords: Turkey; Elasticity of marginal social valuation of income; Social cost-benefit analysis; Turkish politicians; Welfare weights; Welfare parameter (search for similar items in EconPapers)
Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:eme:jespps:v:41:y:2014:i:6:p:808-820

DOI: 10.1108/JES-01-2013-0011

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