Tài liệu hạn chế xem trước, để xem đầy đủ mời bạn chọn Tải xuống
1
/ 85 trang
THÔNG TIN TÀI LIỆU
Thông tin cơ bản
Định dạng
Số trang
85
Dung lượng
3,24 MB
Nội dung
INEQUALITIES IN CHILDREN’S OUTCOMES IN DEVELOPING COUNTRIES Intergenerational Associations between Parents and Children, Inequality and Poverty Jere Behrman, University of Pennsylvania Discussant: Karen Macours (Paris School of Economics) University of Oxford, 8–9 July 2013 Intergenerational Transmission of Poverty and Inequality: Young Lives Jere Behrman, Benjamin Crookston, Kirk Dearden, Le Thuc Duc, Subha Mani, Whitney Schott, Aryeh Stein, and the Young Lives Determinants and Consequences of Child Growth Project Team Research support acknowledged from BMGF Global Health Grant OPP10327313, NICHD Grant R01 HD070993, GCC Grant 0072-03 and, through Young Lives, DFID and the Netherlands Ministry of Foreign Affairs Introduction • Considerable literature on how family and community background affect investments in children • Empirical estimates generally show significant associations between family and community background and child outcomes • However, not much evidence on how much improving family and community background would reduce the “poor” (those with the lowest levels) and inequality of child outcomes Introduction • We provide estimates for Young Lives countries for parental resources/human capital and child outcomes, and implied future child household consuption (as adults) under the assumption that intergenerational familial and community associations reflect causality • Likely to be upper-bound estimates because of unobservables and tendency for reinforcement of endowment differentials, though random measurement errors or compensation for endowment differences work in the other direction Digression on Estimated Impact of Parents’ Schooling on Child Schooling in Minnesota (Behrman & Rosenzweig AER 2002) Strong emphasis on critical role of parents’, particularly mother’s, schooling But interpretation difficult because: • Intergenerationally correlated endowments E • Assortative mating on S and E Child schooling determined by parents’ S & E (1) Sc = aSm + bEm + cSf + dEf + u Assortative mating relation: (2) Sf = mSm + nEm + v Control for E: adult within-identical twins Assortative Mating: Impact of Additional Year of Own Schooling on Additional Year of Spouse’s Schooling (Relation 2) – Association Because Spouse More Schooled (though less so in standard estimates) AND Has More Endowments 0.7 0.6 0.5 0.4 Own Sch 0.3 0.2 0.1 OLS Twins Impact of Additional Year of Father’s Schooling (Sf) on Child Schooling (w/o and w Sm) 0.5 0.4 0.3 0.2 Effect Sf 0.1 OLS OLS w Sm Twins Twins w Sm Impact of Additional Year of Mother’s Schooling (Sm) on Child Schooling (w/o and w Father’s Schooling Sf) (Note: Controlling for Endowments, More Schooled Women Spend More Time in Labor Market) 0.4 0.3 0.2 0.1 Effect Sm -0.1 -0.2 -0.3 OLS OLS w Sf Twins Twn w Sf Data for Present Paper • Longitudinal study of poverty led by Department of International Development at the University of Oxford, with research and policy partners in Ethiopia, India, Peru and Vietnam • Fairly representative of the population, except the highest part of the income distribution • Involves roughly 12,000 children (8,000 enrolled at ages to 18 months, 4,000 at age years) • We use 5,763 children from younger cohort, collected at ages ~1, 5, and in 2002, 2006, 2009 Child outcomes • Scores on cognitive tests at age – PPVT: Peabody Picture Vocabulary Test, measure of cognitive performance and arguably ability – Math: early math skills – EGRA: reading test • Height-for-age z-score at age 8, HAZ(8) Father’s schooling Vietnam 10 15 10 15 India Peru father's completed schooling, reported in R2 Ethiopia Graphs by country India Peru Vietnam 10 15 10 15 Ethiopia Average over R2 and R3 total monthly consumption * 12/365 in USD Household per Capita Consumption per Day (average over R2 and R3) Graphs by country Estimated Inequality and Poverty for EGRA: Gini none Ethiopia India Peru Vietnam MS=P MS=9y MC=20p MS=9 &MC=40p, CW40p 0.308 0.006 0.344 0.005 0.208 0.004 0.134 0.003 0.298 0.005 0.322 0.006 0.200 0.004 0.130 0.003 0.274 0.005 0.301 0.005 0.188 0.004 0.122 0.003 0.306 0.006 0.344 0.006 0.200 0.004 0.132 0.003 0.264 0.005 0.292 0.005 0.170 0.004 0.120 0.003 Notes: Standard errors below coefficient estimates; zeros coded to 0.4 MS= minimum schooling, MC=minimum consumption, MCW = minimum community wealth, P=primary, 5y=5 years, 9y=9 years, 20p= 20th percentile, 40p=40th percentile Estimated Inequality and Poverty for Math: Gini none Ethiopia India Peru Vietnam MS=P MS=9y MC=20p MS=9 &MC=40p, CW40p 0.432 0.007 0.302 0.005 0.212 0.005 0.171 0.003 0.413 0.006 0.264 0.004 0.204 0.004 0.162 0.003 0.363 0.006 0.237 0.004 0.190 0.004 0.146 0.003 0.427 0.007 0.297 0.006 0.203 0.004 0.168 0.003 0.344 0.005 0.224 0.003 0.175 0.004 0.138 0.003 Notes: Standard errors below coefficient estimates; zeros coded to 0.4 MS= minimum schooling, MC=minimum consumption, MCW = minimum community wealth, P=primary, 5y=5 years, 9y=9 years, 20p= 20th percentile, 40p=40th percentile Estimated Inequality and Poverty, Math: PH none Ethiopia India Peru Vietnam MS=P MS=9y MC=20p MS=9 &MC=40p, CW40p 0.131 0.010 0.164 0.009 0.182 0.010 0.151 0.009 0.131 0.010 0.115 0.008 0.171 0.010 0.137 0.009 0.062 0.007 0.053 0.006 0.146 0.009 0.091 0.007 0.130 0.010 0.163 0.009 0.169 0.010 0.149 0.009 0.033 0.005 0.042 0.005 0.104 0.008 0.063 0.006 Notes: Standard errors below coefficient estimates; zeros coded to 0.4 MS= minimum schooling, MC=minimum consumption, MCW = minimum community wealth, P=primary, 5y=5 years, 9y=9 years, 20p= 20th percentile, 40p=40th percentile Estimated Inequality and Poverty, EGRA: PH none Ethiopia India Peru Vietnam MS=P MS=9y MC=20p MS=9 &MC=40p, CW40p 0.149 0.011 0.192 0.010 0.154 0.009 0.147 0.009 0.149 0.011 0.192 0.010 0.148 0.009 0.143 0.009 0.130 0.010 0.131 0.009 0.125 0.009 0.130 0.008 0.149 0.011 0.192 0.010 0.148 0.009 0.147 0.009 0.116 0.010 0.128 0.008 0.074 0.007 0.119 0.008 Notes: Standard errors below coefficient estimates; zeros coded to 0.4 MS= minimum schooling, MC=minimum consumption, MCW = minimum community wealth, P=primary, 5y=5 years, 9y=9 years, 20p= 20th percentile, 40p=40th percentile Inequality and Poverty, Children’s Generation Table Gini coefficient and poverty headcount (PH), next generation Ethiopia Gini PH 0.350 0.186 0.008 0.012 India Gini 0.252 0.005 Estimated mother's schooling 0.370 0.624 0.005 0.015 Estimated father's schooling Estimated mother's height Estimated consumption PH 0.126 0.008 Peru Gini 0.324 0.008 PH 0.119 0.008 Vietnam Gini PH 0.307 0.107 0.008 0.008 0.393 0.003 0.604 0.012 0.191 0.004 0.068 0.007 0.160 0.004 0.059 0.006 0.313 0.295 0.006 0.014 0.356 0.005 0.377 0.012 0.144 0.003 0.016 0.003 0.153 0.004 0.039 0.005 0.020 0.020 0.020 0.020 0.000 0.000 0.000 0.000 Notes: Poverty line is 20th percentile of parents' distribution for consumption per capita, and is grades for mother's and father's schooling attainment Inequality and Poverty, Children’s Generation Table Gini coefficient and poverty headcount (PH), next generation Ethiopia Gini PH 0.350 0.186 0.008 0.012 India Gini 0.252 0.005 Estimated mother's schooling 0.370 0.624 0.005 0.015 Estimated father's schooling Estimated mother's height Estimated consumption PH 0.126 0.008 Peru Gini 0.324 0.008 PH 0.119 0.008 Vietnam Gini PH 0.307 0.107 0.008 0.008 0.393 0.003 0.604 0.012 0.191 0.004 0.068 0.007 0.160 0.004 0.059 0.006 0.313 0.295 0.006 0.014 0.356 0.005 0.377 0.012 0.144 0.003 0.016 0.003 0.153 0.004 0.039 0.005 0.020 0.020 0.020 0.020 0.000 0.000 0.000 0.000 Notes: Poverty line is 20th percentile of parents' distribution for consumption per capita, and is grades for mother's and father's schooling attainment Inequality and Poverty, Children’s Generation Table Gini coefficient and poverty headcount (PH), next generation Ethiopia Gini PH 0.350 0.186 0.008 0.012 India Gini 0.252 0.005 Estimated mother's schooling 0.370 0.624 0.005 0.015 Estimated father's schooling Estimated mother's height Estimated consumption PH 0.126 0.008 Peru Gini 0.324 0.008 PH 0.119 0.008 Vietnam Gini PH 0.307 0.107 0.008 0.008 0.393 0.003 0.604 0.012 0.191 0.004 0.068 0.007 0.160 0.004 0.059 0.006 0.313 0.295 0.006 0.014 0.356 0.005 0.377 0.012 0.144 0.003 0.016 0.003 0.153 0.004 0.039 0.005 0.020 0.020 0.020 0.020 0.000 0.000 0.000 0.000 Notes: Poverty line is 20th percentile of parents' distribution for consumption per capita, and is grades for mother's and father's schooling attainment Intergenera(onal Transmission of Poverty and Inequality: Young Lives Discussion: Karen Macours Paris School of Economics -‐ INRA Summary • How large is the intergenera(onal transmission of poverty and inequality? – This paper: through rela(onship between parental human capital and investments and children’s HK – Es(mate • ln(C) = f(parents schooling, mothers age and height, unobserved family facto => This rela(onship is assumed to carry over to child’s genera(on • Child’s human capital = f(C, parents schooling, family and community characteris(cs) – Simulate what happens if one increases parental schooling, consump(on, and community wealth to certain thresholds – Find large change in parental HK/investments leads to only modest changes in poverty, and almost no changes in inequality ⇒ Given findings: are we all focusing on a “second order” ques(on (or at least should we find a beWer mo(va(on for our work)? Big issue • Possible intergenera(onal transmission implicitly or explicitly mo(vates a lot of work on ECD, health, educa(on, … • But how important is it? – Ideally we have very long term panel data over mul(ple genera(ons to look at this – YLS panel can possibly proxy for even longer term data – Focus on transfer through HK, as opposed to physical capital (assets, land, …) helps understand part of puzzle ? • But are we sure HK is the first order issue? And what about complementari(es? Model, outcomes, bias • Other factors determining returns to HK? – General equilibrium effects? E.g higher educa(on for all could decrease returns to 1 year of educa(on? • Outcome measures: – rela(ve poverty (boWom 20%) : how does it look like with absolute poverty line? – GINI: possibly some type of rank order measure? • Argument of upward endogeneity bias? – AWenua(on bias? measurement error ~ “rough” proxy for parental HK (schooling) Assump(ons • How important are some of the key assump(ons? – Some seem directly related to outcomes of interest? • Human capital distribu(on for children is the same as for their parents – If nobody is changing ranks, not surprising there is no large impact on inequality? • Child’s percen(le distribu(on in HK at age 8 (math, ppvt, egra) persists and determines rank in adult schooling aWainment – To the extent that in many countries decisions afer 8 might differen(ate adult HK more, this may lead to underes(ma(on? – Can you support some of these assump(ons with the data? • E.g rela(onship test scores kids at 8 and schooling at 12 and 15? • Sensi(vity analysis on assump(ons secular trends (e.g what happens in case of secular declines), on modifica(ons to distribu(ons, … ? INEQUALITIES IN CHILDREN’S OUTCOMES IN DEVELOPING COUNTRIES This presentation was given during the conference on Inequalities in Children’s Outcomes in Developing Countries hosted by Young Lives in Oxford, 8–9 July 2013 http://www.younglives.org.uk/what-we-do/news/children-inequalities-younglives-conference-2013/overview ... Vietnam Parents (actual) Children (expected) 1.00 1.20 0.77 0.83 0.15 0.17 13.69 12.93 1,602 1,602 Inequality and Poverty, Parents? ?? Generation Gini coefficient and poverty headcount (PH), parents'' ... and is years of schooling for mother''s and father''s schooling Inequality and Poverty, Children? ??s Generation Gini coefficient and poverty headcount (PH), next generation Ethiopia Gini PH 0.350.. .Intergenerational Transmission of Poverty and Inequality: Young Lives Jere Behrman, Benjamin Crookston, Kirk Dearden, Le Thuc Duc, Subha Mani, Whitney Schott, Aryeh Stein, and the Young