<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0185-1667</journal-id>
<journal-title><![CDATA[Investigación económica]]></journal-title>
<abbrev-journal-title><![CDATA[Inv. Econ]]></abbrev-journal-title>
<issn>0185-1667</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Economía]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0185-16672007000200081</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Capital humano y productividad en microempresas]]></article-title>
<article-title xml:lang="en"><![CDATA[Human Capital and Productivity in Microenterprises]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mungaray Lagarda]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez Urquidy]]></surname>
<given-names><![CDATA[Martín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Baja California Facultad de Economía y Relaciones Internacionales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Baja California Facultad de Economía y Relaciones Internacionales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2007</year>
</pub-date>
<volume>66</volume>
<numero>260</numero>
<fpage>81</fpage>
<lpage>115</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-16672007000200081&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-16672007000200081&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-16672007000200081&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Con información de una muestra de microempresas, este trabajo contrasta empíricamente la hipótesis de que los diferenciales en la acumulación de capital humano en las empresas se asocian con diferenciales en términos de productividad. Un elemento novedoso para la literatura sobre capital humano y productividad que se deriva de este trabajo lo constituye el tratamiento conjunto de dos fuentes de capital humano: la escolaridad formal en instituciones educativas y los aprendizajes de carácter informal acumulados a través de la experiencia del dueño en la administración del negocio. En congruencia con trabajos previos, la relación entre capital humano y productividad se determina a través de estimar funciones de producción que incorporan variables dummy para representar distintos niveles de escolaridad formal y experiencia. Los resultados presentan evidencia a favor de la hipótesis del capital humano, en el sentido de que la escolaridad formal y la experiencia en la administración del negocio favorecen la productividad de las microempresas, aunque con impactos diferenciados que favorecen el segundo, lo que permite asociarlo con la permanencia de las empresas en el largo plazo. Los rendimientos de la educación se materializan particularmente para la educación técnica, siendo inferiores a los reportados para la experiencia.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The hypothesis that human capital increases productivity is tested using data from a sample of low value-added microenterprises. A special attribute of this paper is the join treatment of formal learning or training in education institutions, and informal training by experience of the owner in the firm management. Following previous studies, the relation between human capital and productivity is determined by estimating production functions with the inclusion of dummy variables to control for formal education and informal training by experience. Evidence of the linkage of human capital and productivity is reported. It is also reported that both types of investment in human capital have asymmetrical contribution to productivity, where the impact of experience is predominant. This allows concluding that the long-run existence of the firms in the sample is explained by the accumulation of experience in the management. Returns to education occur primarily for technical education and are lower than those generated by experiential learning in the firm management.]]></p></abstract>
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