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Title:The focus axiom and poverty: On the co-existence of precise language and ambiguous meaning in economic measurement PDF Logo
Authors:Subramanian, Subbu
Issue Date:2012
Citation:[Journal:] Economics: The Open-Access, Open-Assessment E-Journal [Volume:] 6 [Issue:] 2012-8 [Pages:] 1-21
Abstract:Despite the formal rigour that attends social and economic measurement, the substantive meaning of particular measures could be compromised in the absence of a clear and coherent conceptualization of the phenomenon being measured. A case in point is afforded by the status of a focus-axiom in the measurement of poverty. Focus requires that a measure of poverty ought to be sensitive only to changes in the income-distribution of the poor population of any society. In practice, most poverty indices advanced in the literature satisfy an income-focus but not a population-focus axiom. This, it is argued in the present paper, makes for an incoherent underlying conception of poverty. The paper provides examples of poverty measures which either satisfy both income and population focus or violate both, or which effectively do not recognize a clear dichotomization of a population into its poor and non-poor components, and suggests that such measures possess a virtue of consistency, and coherent meaning, lacking in most extant measures of poverty available in the literature.
Subjects:poverty measure
constituency principle
income focus
population focus
comprehensive focus
JEL:B40
D31
D63
I32
O15
Persistent Identifier of the first edition:doi:10.5018/economics-ejournal.ja.2012-8
Creative Commons License:http://creativecommons.org/licenses/by-nc/2.0/de/deed.en
Document Type:Article
Appears in Collections:Economics: The Open-Access, Open-Assessment E-Journal - Journal Articles

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