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Recursos didácticos en ciencias naturales.
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ISSN: 11320869 ISBN: 9788493667719 Year: 2008 Publisher: Madrid Real sociedad española de historia natural

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Vleesetende planten
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Year: 2008 Publisher: Merchtem

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Nepenthes : Tropische bekerplant
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Year: 2008 Publisher: Merchtem

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Le grand livre des activités nature
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ISBN: 9782215053859 Year: 2008 Publisher: s.l. Fleurus

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Petite histoire des collèges et des lycées
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ISBN: 9782842744335 Year: 2008 Publisher: Nantes : Paris : Temps ; Institut de recherches de la FSU,


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Quality of Schooling, Returns To Schooling and the 1981 Vouchers Reform in Chile
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Year: 2008 Publisher: Washington, D.C., The World Bank,

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This paper exploits unique information on cognitive ability to examine the importance of schooling and non-schooling cognitive skills for heterogeneous individuals using instrumental variables estimation. Using a binary instrument based on the 1981 reform in Chile, the authors find that the main beneficiaries of the reform were those who at the time were pupils in basic schooling (ages 6-13). For this treated group of pupils, only a negligible part of the estimated return to schooling is due to classical ability bias. The labor market reward to an additional year of schooling is a measure of the "true" non-cognitive return to schooling. However, once the treated group is expanded to include secondary school students, the pure return to schooling decreases dramatically, while the return to schooling cognitive and non-schooling cognitive skills increases accordingly, suggesting that a large part of the estimated return in an earnings function is due to classical ability bias. For this treated group (mixture of basic school and secondary school age students), the labor market rewarded cognitive skills (especially those acquired through schooling) significantly.


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Poisoning the Mind : Arsenic Contamination and Cognitive Achievement of Children
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Year: 2008 Publisher: Washington, D.C., The World Bank,

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Bangladesh has experienced the largest mass poisoning of a population in history owing to contamination of groundwater with naturally occurring inorganic arsenic. Continuous drinking of such metal-contaminated water is highly cancerous; prolonged drinking of such water risks developing diseases in a span of just 5-10 years. Arsenicosis-intake of arsenic-contaminated drinking water-has implications for children's cognitive and psychological development. This study examines the effect of arsenicosis at school and at home on cognitive achievement of children in rural Bangladesh using recent nationally representative school survey data on students. Information on arsenic poisoning of the primary source of drinking water-tube wells-is used to ascertain arsenic exposure. The findings show an unambiguously negative and statistically significant correlation between mathematics score and arsenicosis at home, net of exposure at school. Split-sample analysis reveals that the effect is only specific to boys; for girls, the effect is negative but insignificant. Similar correlations are found for cognitive and non-cognitive outcomes such as subjective well-being, that is, a self-reported measure of life satisfaction (also a direct proxy for health status) of students and their performance in primary-standard mathematics. These correlations remain robust to controlling for school-level exposure.


Book
Quality of Schooling, Returns To Schooling and the 1981 Vouchers Reform in Chile
Author:
Year: 2008 Publisher: Washington, D.C., The World Bank,

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Abstract

This paper exploits unique information on cognitive ability to examine the importance of schooling and non-schooling cognitive skills for heterogeneous individuals using instrumental variables estimation. Using a binary instrument based on the 1981 reform in Chile, the authors find that the main beneficiaries of the reform were those who at the time were pupils in basic schooling (ages 6-13). For this treated group of pupils, only a negligible part of the estimated return to schooling is due to classical ability bias. The labor market reward to an additional year of schooling is a measure of the "true" non-cognitive return to schooling. However, once the treated group is expanded to include secondary school students, the pure return to schooling decreases dramatically, while the return to schooling cognitive and non-schooling cognitive skills increases accordingly, suggesting that a large part of the estimated return in an earnings function is due to classical ability bias. For this treated group (mixture of basic school and secondary school age students), the labor market rewarded cognitive skills (especially those acquired through schooling) significantly.


Book
Poisoning the Mind : Arsenic Contamination and Cognitive Achievement of Children
Authors: ---
Year: 2008 Publisher: Washington, D.C., The World Bank,

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Abstract

Bangladesh has experienced the largest mass poisoning of a population in history owing to contamination of groundwater with naturally occurring inorganic arsenic. Continuous drinking of such metal-contaminated water is highly cancerous; prolonged drinking of such water risks developing diseases in a span of just 5-10 years. Arsenicosis-intake of arsenic-contaminated drinking water-has implications for children's cognitive and psychological development. This study examines the effect of arsenicosis at school and at home on cognitive achievement of children in rural Bangladesh using recent nationally representative school survey data on students. Information on arsenic poisoning of the primary source of drinking water-tube wells-is used to ascertain arsenic exposure. The findings show an unambiguously negative and statistically significant correlation between mathematics score and arsenicosis at home, net of exposure at school. Split-sample analysis reveals that the effect is only specific to boys; for girls, the effect is negative but insignificant. Similar correlations are found for cognitive and non-cognitive outcomes such as subjective well-being, that is, a self-reported measure of life satisfaction (also a direct proxy for health status) of students and their performance in primary-standard mathematics. These correlations remain robust to controlling for school-level exposure.

Latino dropouts in rural America : realities and possibilities
Authors: --- ---
ISBN: 1435658752 9781435658752 0791478688 0791473872 Year: 2008 Publisher: Albany, New York : State University of New York Press,

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