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Sources of Income Persistence: Evidence from Rural El Salvador

Author

Listed:
  • Walter Sosa-Escudero

    () (Universidad de San Andrés)

  • Mariana Marchionni

    () (Centro de Estudios Distributivos, Laborales y Sociales (CEDLAS) - FCE - UNLP)

  • Omar Arias

    () (Poverty and Gender Group of the Latin American and Caribbean Department of the World Bank)

Abstract

This paper uses a unique panel dataset (1995-2001) of rural El Salvador to investigate the main sources of the persistence and variability of incomes. First we propose an econometric framework where a general dynamic panel model is validly reduced to a simple linear structure with a dynamic covariance structure, which augments considerably the number of degrees of freedom usually lost in the construction of instruments to estimate standard dynamic panel models. Then we investigate the extent to which families are continuously poor due to endowments (observed and unobserved) that yield low income potential or due to systematic income shocks that they are unable to smooth. We find that life-cycle incomes are largely explained by the relatively time-invariant productive characteristics of families and their members such as education, public goods and other assets. Observed income determinants account for about half of income persistence. Controlling for unobserved heterogeneity leaves little room for pure state dependence. Although of second order, high volatility and the inability to insure from shocks is a more important source of variation in incomes than in developed countries. Low income potential is the more likely source of poverty traps in Rural El Salvador. Many of the family endowments are manipulable by policy interventions, although many not in the short term.

Suggested Citation

  • Walter Sosa-Escudero & Mariana Marchionni & Omar Arias, 2006. "Sources of Income Persistence: Evidence from Rural El Salvador," CEDLAS, Working Papers 0037, CEDLAS, Universidad Nacional de La Plata.
  • Handle: RePEc:dls:wpaper:0037
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    References listed on IDEAS

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    Citations

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    Cited by:

    1. Walter Sosa Escudero & Anil K. Bera, 2008. "Tests for Unbalanced Error Component Models Under Local Misspecication," CEDLAS, Working Papers 0065, CEDLAS, Universidad Nacional de La Plata.
    2. Diego Battiston & Francisco Franchetti, 2008. "Inequality in Health Coverage, Empirical Analysis with Microdata for Argentina 2006," CEDLAS, Working Papers 0063, CEDLAS, Universidad Nacional de La Plata.
    3. Mariana Marchionni & Germán Bet & Ana Pacheco, 2007. "Empleo, Educación y Entorno Social de los Jóvenes: Una Nueva Fuente de Información," CEDLAS, Working Papers 0061, CEDLAS, Universidad Nacional de La Plata.
    4. Guillermo E. Perry & Omar S. Arias & J. Humberto López & William F. Maloney & Luis Servén, 2006. "Poverty Reduction and Growth : Virtuous and Vicious Circles," World Bank Publications, The World Bank, number 6997.
    5. Ricardo N. Bebczuk, 2008. "Dolarización y Pobreza en Ecuador," CEDLAS, Working Papers 0066, CEDLAS, Universidad Nacional de La Plata.
    6. Maribel Jimenez & Monica Jimenez, 2009. "La Movilidad Intergeneracional del Ingreso: Evidencia para Argentina," CEDLAS, Working Papers 0084, CEDLAS, Universidad Nacional de La Plata.
    7. Walter Sosa Escudero, 2007. "Testing for Persistence in the Error Component Model:A One-Sided Approach," Working Papers 94, Universidad de San Andres, Departamento de Economia, revised Feb 2007.
    8. Federico Zincenko & Walter Sosa-Escudero & Gabriel Montes-Rojas, 2014. "Robust tests for time-invariant individual heterogeneity versus dynamic state dependence," Empirical Economics, Springer, vol. 47(4), pages 1365-1387, December.
    9. Paula Giovagnoli, 2007. "Failures in school progression," CEDLAS, Working Papers 0050, CEDLAS, Universidad Nacional de La Plata.
    10. Cerro, Ana María & Ortega, Ana Carolina, 2012. "Sources of Regional Crime Persistence Argentina 1980-2008," MPRA Paper 44482, University Library of Munich, Germany.
    11. Ricardo Bebczuk, 2009. "SME Access to Credit in Guatemala and Nicaragua: Challenging Conventional Wisdom with New Evidence," CEDLAS, Working Papers 0080, CEDLAS, Universidad Nacional de La Plata.
    12. Ricardo Bebczuk & Francisco Haimovich, 2007. "MDGs and Microcredit: An Empirical Evaluation for Latin American Countries," CEDLAS, Working Papers 0048, CEDLAS, Universidad Nacional de La Plata.
    13. Sebastian Galiani & Federico Weinschelbaum, 2012. "Modeling Informality Formally: Households And Firms," Economic Inquiry, Western Economic Association International, vol. 50(3), pages 821-838, July.
    14. Leopoldo Tornarolli & Adriana Conconi, 2007. "Informalidad y Movilidad Laboral: Un Análisis Empírico para Argentina," CEDLAS, Working Papers 0059, CEDLAS, Universidad Nacional de La Plata.

    More about this item

    Keywords

    Income mobility; Poverty Traps; Panel Data; El Salvador;

    JEL classification:

    • I32 - Health, Education, and Welfare - - Welfare, Well-Being, and Poverty - - - Measurement and Analysis of Poverty

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