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Como as Famílias Brasileiras Avaliam a Suficiência de seus Rendimentos Segundo a POF 2002-2003 - Implicações para um Índice de Qualidade de Vida

  • Marcelo de Sales Pessoa
  • Marcos Antonio Coutinho da Silveira
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    O trabalho investiga os determinantes demográficos, econômicos e sociais do grau de satisfação das famílias brasileiras com seus rendimentos. Para tanto, um modelo logit ordenado é estimado para explicar o desempenho de um indicador subjetivo de suficiência da renda construído com base no questionário da POF 2002-2003 sobre Avaliação das Condições de Vida. Apesar do expressivo efeito marginal da renda corrente e do consumo sobre o indicador, o reduzido poder de explicação conjunto destas variáveis é consistente com a bem documentada evidência empírica de que existe um descasamento entre indicadores objetivos e subjetivos de qualidade de vida, pelo menos no que tange aos domínios materiais da existência humana. Este resultado pode ser explicado, pelo menos em parte, por diferenças de expectativas e de percepção de renda relativa no universo das famílias brasileiras. A inclusão de um exaustivo número de variáveis explicativas no modelo melhora sensivelmente seu poder de explicação, embora numa extensão ainda insuficiente para produzir um ajustamento satisfatório aos dados. Isso sugere a existência de algum tipo de heterogeneidade não observada explicando uma proporção considerável da variação do grau de satisfação das famílias brasileiras com suas rendas. Outro resultado importante do trabalho é que o efeito marginal de choques permanentes na renda corrente sobre o indicador de suficiência da renda é mais forte que o efeito de choques transitórios na renda corrente. The work investigates the demographic, economic and social determinants of the degree of satisfaction of the Brazilian househols with their income. For that, a ordered logit model is estimated in order to explain the performance of a subjective indicator of income sufficiency built with basis on the POF 2002-2003 survey on Life Conditions Evaluation. Despite the expressive marginal effect of the current income and the consumption on the indicator, the low joint explanation power of these variables is consistent with the well documented empirical evidence of a mismatch between objective and subjective indicators of life quality, at least regarding the material domains of human existence. This result can be explained to some extent by differences in expectations and relative income perception among Brazilian households. The inclusion of an exhaustive number of explanatory variables into the regression improves the model significantly, although to an insufficient extent to produce a satisfactory adjustment to the data. This suggests the existence of some type of non-observed heterogeneity explaining a considerable proportion of the variation of the degree of satisfaction of the Brazilian househols with their income. Another important result of the work is that the marginal effect of permanent shocks to current income on the indicator of income sufficiency is stronger that the effect of transitory shocks to current income.

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    Paper provided by Instituto de Pesquisa Econômica Aplicada - IPEA in its series Discussion Papers with number 1461.

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    Length: 38 pages
    Date of creation: Jan 2010
    Date of revision:
    Handle: RePEc:ipe:ipetds:1461
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    1. Richard Layte & Bertrand Maître & Brian Nolan & Christopher T. Whelan, 1999. "Income, Deprivation and Economic Strain: An Analysis of the European Community Household Panel," Papers WP109, Economic and Social Research Institute (ESRI).
    2. Oswald, Andrew J, 1997. "Happiness and Economic Performance," Economic Journal, Royal Economic Society, vol. 107(445), pages 1815-31, November.
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