One of the most salient features of developing economies is the existence of a large informal sector. In this paper, we use quantitative theory to study the dynamic implications of informality on wage inequality, human capital accumulation, child labor, and long-run growth. Our model can generate transitory informality equilibria or informality-induced poverty traps. Its calibration reveals that the case for the poverty-trap hypothesis arises: although informality serves to protect low-skilled workers from extreme poverty in the short run, it prevents income convergence between developed and developing nations in the long run. Then we examine the effectiveness of different development policies to exit the poverty trap. Our numerical experiments show that using means-tested education subsidies is the most costeffective single policy option. However, for longer time horizons, or as the economy gets closer to the poverty trap threshold, combining means-tested education and wage subsidies is even more effective.

The IEB research group in Human Capital aims at promoting research in the Economics of Education. The main objective of this group is to foster research related to the education and training of individuals and to promote the analysis of education systems and policies from an economic perspective. Some topics are particularly relevant: Evaluation of education and training policies; monetary and non-monetary effects of education; analysis of the international assessments of the skills of the young (PISA, PIRLS, TIMMS) and adult populations (PIAAC, IALS); education and equality, considering the inclusion of the disabled in the education system; and lifelong learning. This group puts special emphasis on applied research and on work that sheds light on policy-design issues. Moreover, research focused in Spain is given special consideration. Disseminating research findings to a broader audience is also an aim of the group. This research group enjoys the support from the IEB-Foundation. The Barcelona Institute of Economics (IEB) is a research centre at the University of Barcelona (UB) which specializes in the field of applied economics. The IEB is a foundation funded by the following institutions: Applus, Abertis,

The IEB research group in Human Capital aims at promoting research in the Economics of Education. The main objective of this group is to foster research related to the education and training of individuals and to promote the analysis of education systems and policies from an economic perspective. Some topics are particularly relevant: Evaluation of education and training policies; monetary and non-monetary effects of education; analysis of the international assessments of the skills of the young (PISA, PIRLS, TIMMS) and adult populations (PIAAC, IALS); education and equality, considering the inclusion of the disabled in the education system; and lifelong learning. This group puts special emphasis on applied research and on work that sheds light on policy-design issues. Moreover, research focused in Spain is given special consideration. Disseminating research findings to a broader audience is also an aim of the group. This research group enjoys the support from the IEB-Foundation.The Barcelona Institute of Economics (IEB) is a research centre at the University of Barcelona (UB) which specializes in the field of applied economics. The IEB is a foundation funded by the following institutions: Applus,

Human capital accumulation and urbanization play a decisive role in the analysis of growth and development. Stylized facts reveal a positive association between human capital accumulation, urbanization and growth for both over time and across countries. While Africa has the fastest increasing human capital accumulation and urbanization growth, it is the region experiencing the slowest economic growth. This paper argues that the adjustment-costs resulting from rapid urbanization can explain this paradox. In other words, low or negative social return to education in the short-run might be due to transitory adjustment or urbanization costs. We build a simple growth model with two sectors, calibrate its parameters and then use it to simulate the African trajectory of human capital, urban population and GDP per capita. While we predict greater growth rates in future decades (backlog) convergence with high-income countries will be limited. The current levels of GDP per capita could have been reached 15 years earlier if it were not for the adjustment costs.

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