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People’s Evaluations of Income Inequality and the Gini Coefficient Different in Details, Similar in Patterns

100%
Jancewicz B.
Polish Sociological Review
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2019
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vol. 207
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issue 3
289-304
EN
Recent studies suggest that the Gini coefficient’s and people’s evaluations of income inequality differ. Thus, we risk adopting policies that decrease the coefficient but not the inequality people see. This article argues that the coefficient does reflect people’s perception of inequality, at least in relation to the criticised Pigou-Dalton Transfer Principle stating that inequality falls whenever a person with higher income gives a small part of it to a person with lower income. Results from a questionnaire experiment where 105 WUT students evaluated inequality of different income distributions confirm that answers strictly following the principle are rare (around 3% of the sample). However, the average correlation between respondents’ and Gini’s evaluations was relatively high (0.693). Furthermore, when respondents’ evaluations were averaged, the correlation jumped to 0.954. An MDS analysis confirms that while these evaluations differed in details, the pattern common to respondents’ evaluations was in line with the Gini coefficient.
2
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Income inequalities: axioms of income inequality measures and people's perceptions

100%
Jancewicz B.
Decyzje
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2016
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issue 25
EN
Studies show that people perceive income inequality differently than most popular income inequality measures and axioms (postulated properties of inequality) indicate. This article synthesizes and reviews different results on income inequality perception. It presents basic income inequality axioms and analyses the level of support found in multiple studies. The paper shows that while answers to particular questions seldom perfectly agree with income inequality measures, the general pattern of respondents' answers is strongly correlated with these measures. It also argues that the observed differences can be partially explained by following Amartya Sen’s suggestion that income inequality is a multidimensional concept (1973, p. 48).
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Wealth formation by economic agents and their international mobility: towards an eclectic migration decision-support framework

63%
Jancewicz B., Markowski S.
Studia z Polityki Publicznej
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2019
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vol. 6
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issue 4(24)
33-60
PL
Migracja międzynarodowa miała istotny wpływ na społeczny i gospodarczy rozwój narodów. Zdecydowana większość populacji świata nadal jednak mieszka w kraju swojego urodzenia. Z jednej strony różnice w dochodach i zamożności państw stanowią siłę odśrodkową motywującą do migracji, z drugiej strony utrudnienia w swobodnym przenoszeniu się kapitału ludzkiego, finansowego, fizycznego jak i społecznego stanowią siłę dośrodkową, motywującą do pozostania w miejscu. W niniejszym artykule dokonano przeglądu znacznej części literatury na temat migracji międzynarodowej pod kątem wpływu czynników ekonomicznych na decyzje dotyczące międzynawowej mobilności i jej braku. Artykuł ma na celu udoskonalenie i rozszerzenie neoklasycznych podstaw teorii migracji, nakreślenie, w jaki sposób ekonomiczni agenci (potencjalni migranci) starają się uprościć skomplikowane mechanizmy decyzyjne oraz pokazanie, jak w przypadku niezdecydowania domyślną decyzją staje się pozostanie w miejscu.
EN
International migration has been a major influence on the economic and social development of nations. Nevertheless, a vast majority of the global population continues to reside in their country of birth. While income/wealth differentials between states create centrifugal forces responsible for migration, impediments to international mobility of human, financial, physical and social capital assets work in the centripetal direction. This paper reviews a large segment of the extant literature on international migration to probe economic influences on people’s international mobility and immobility decisions. It aims to refine and extend the neoclassical foundations of migration theory and to outline how potentially complex decision mechanisms used by potentially mobile economic agents may be modified to simplify the complexity inherent in such choices so that immobility is often a default outcome of indecision.
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