Determinants of adoption of Internet in Africa: Case of 17 sub-Saharan countries

This study develops two-level hierarchical model that identifies factors that favor or hamper the use of Internet in Africa. We used data from a survey covering 17 African countries. Our results confirm that urbanization and the spread of Internet infrastructures play an important role in individual decisions to adopt this technology. They also reveal that an individual will have a larger probability to use Internet if he/she has at least completed primary education.Moreover, individual characteristics such as sex, age, level of education, and a social network membership greatly influence Internet adoption. Indeed, men are more likely to use Internet than women; this probability is larger if they are young (16–30 years old) or if they attained at least secondary education level or if they are members of a social network.     

The Substitutability of Real Estate Assets

This paper investigates the degree of substitutability between securitized real estate assets and real estate assets whose prices are appraisal-based. Given the insensitivity of unsecuritized asset's returns to the returns on stock market indices, equilibrium asset pricing models cannot be used to compare these two avenues of investment. Two assets are deemed substitutable if the information sets underlying unbiased, minimum error variance estimates of their pricing parameters are identical. The empirical evidence shows that the prices of the transactions-based assets—real estate investment trusts and the stock price index of the home building industry—follow a random walk while the prices of the appraisal-based assets—FRC/NCREIF indices—do not. The variance decompositions of the vector autoregressions also show that the level of economic activity helps predict the price indices of appraisal-based assets while the stock market index and the term structure of interest rates are better predictors of the prices of transactions-based assets     

Poverty Reduction Effects of Agricultural Technology Adoption: The Case of Improved Cassava Varieties in Nigeria

We use DNA‐fingerprinting to estimate the poverty reduction effect of adoption of improved cassava varieties in Nigeria. We estimate the counterfactual household income distribution of cassava producers by combining farm‐level treatment effects with a market‐level model. Our results suggest that adoption of improved cassava varieties has led to a 4.6 percentage point reduction in poverty, though this is sensitive to the measurement of adoption status. Therefore, accurate measurement of adoption is crucial for a more credible estimate of the poverty reduction effect of adoption. Our analysis also suggests that farmers who are more likely to be adopters are also likely to face higher structural costs. Addressing structural barriers that make improved technologies less profitable for the poor would therefore be important to increase the poverty reduction effect of improved cassava varieties.     

Heterogeneity in entrepreneurship in developing countries: Risk,credit, and migration and the entrepreneurial propensity of youth and women

Promoting youth and female entrepreneurship is crucial to inclusive growth and the future economic and social prospects of developing countries. Evidence tends to suggest that young and female entrepreneurs are in a minority, and the extent and generating mechanisms of this outcome tend to be country‐specific. This collection of papers brings together recent empirical contributions exploring key drivers of this heterogeneity entrepreneurial propensity of youth and female in the context of a group of countries in Africa, Latin America, and the Middle East, paying special attention to the role of and issues relating to access to credit, attitudes to risk, and migratory status. A common thread in all the papers is the effective role of risk, uncertainty, and asymmetric information in the determination of entrepreneurship and in the demand for and allocation of credit when potential entrepreneurs are from specific groups, that is, women, indigenous women, women and youth in conflict and post‐conflict situations, and migrant youth. Based on these results, the papers explore various challenges in the implementation of public policies designed to promote entrepreneurship within these specific segments of the population.     

Stages and determinants of fertilizer use in semiarid African agriculture: the Niger experience

Fertilization is a stepwise decision in Niger. Survey data from a representative sample of 100 households were utilized with individual and joint estimation to evaluate the determinants of fertilizer use at its three different stages: manure alone and two different types of inorganic fertilizer application. The fertilizer price relative to the millet price was always a highly significant determinant of fertilizer adoption. Farmers' experience in seeing the results of fertilization in the field was a principal factor influencing the use of manure and of the micro‐fertilization. Other studies in semiarid regions have emphasized risk, liquidity, or fertilizer responsiveness under harsh conditions but the shift to the micro doses of inorganic fertilizer was statistically associated here with the demonstration trials and the price ratios (fertilizer/millet). A variable reflecting the millet price recovery approximately 6 months after harvest was the most important factor in the decision to raise further inorganic fertilizer use with side dressing. Policy implications were focused on the importance of demonstration trials and improvements in the economic conditions (millet–fertilizer price ratios).     

Rotterdam model versus almost ideal demand system: will the best specification please stand up?

The Rotterdam model and the Almost Ideal Demand System (AIDS) are often applied in consumer demand systems modeling. Using Monte Carlo techniques, we determine which model performs best in recovering the true elasticities of demand. The AIDS model is usually used in linearized form. Since the Rotterdam model is also linear in a very similar form, comparison of the Rotterdam model and the AIDS model has been the subject of much speculation in the literature. We not only compare the linearized AIDS model with the Rotterdam model, but also with the full nonlinear AIDS. Copyright © 2008 John Wiley & Sons, Ltd.     

Investir sur le capital humain: éducation et santé

Résumé: Ce papier passe en revue les raisons d'investir dans le capital humain dans un pays en développement, évalue les performances accomplies au cours des ann ées 1990 et 2000 en matière d'éducation et de santé, particulièrement dans les pays africains, et soumet à une analyse critique les réformes de politiques qui ont sous‐tendu ces performances. Les contraintes et opportunités offertes par la mondialisation sont examinées dans le contexte des pays africains. Enfin, des recommandations sont faites pour accélérer l'accumulation d'un capital humain de qualité en Afrique à travers l'éducation et la santé.     

Treasury revenue and foreign trade taxation

Zusammenfassung Staatseinnahmen und die Besteuerung des Au\enhandels. — In diesem Aufsatz wird eine vergleichende L?nderstudie durchgeführt, um die fiskalische Bedeutung von Au\enhandelssteuern und deren Beziehung zum Pro-Kopf-Einkommen und zu der Au\enhandelsabh?ngigkeit des Landes zu zeigen. Der Test basiert auf Durchschnittsangaben der Jahre 1972–1978 für 93 L?nder und wird sowohl für die Exporte und Importe zusammen als auch für die Exporte und Importe getrennt durchgeführt. Es zeigt sich, da\ die Einfuhrbesteuerung eine erheblich gr?\ere fiskalische Bedeutung hat als die Ausfuhrbesteuerung. Das gilt sowohl für die Entwicklungsl?nder als auch für die Industriel?nder als Gruppe, obwohl die Exportsteuer für die einzelnen Entwicklungsl?nder ein sehr unterschiedliches Gewicht haben kann. Die fiskalische Bedeutung der Au\enhandelsbesteuerung nimmt ab, wenn das Pro-Kopf-Einkommen ansteigt, jedenfalls dann, wenn eine bestimmte Einkommensschwelle überschritten wird. Diese Hypothese konnte auch aufrechterhalten werden, als im Vergleich zu anderen Studien neuere Daten und eine andere Gruppe von L?ndern benutzt wurden. Die Ergebnisse best?tigen nicht die Behauptung, da\ die Au\enhandelssteuern st?rker als andere Steuern ansteigen, wenn der Au\enhandel an Bedeutung zunimmt.

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Résumé Les recettes publiques et la taxation du commerce extérieur. — Cet article analyse pour beaucoup de pays l’importance fiscale des taxes sur le commerce et sa relation au revenu per capita et à la dépendance d’un pays du commerce extérieur. Le test, basé sur les données moyennes des années 1972–1978 et des 93 pays, est fait pour les exportations et importations ensemble aussi bien que pour les exportations et importations séparément. Le résultat est que la taxation des importations a une considérablement plus importante fonction fiscale que la taxation des exportations. Ce résultat est valable pour les pays développants aussi bien que pour les pays développés, considérés comme groupe, bien que l’importance de la taxation des exportations puisse considérablement varier parmi des PVD individuels. L’importance fiscale des taxes sur le commerce extérieur se reduit si le revenu per capita accro?t, du moins après le revenu excède un certain seuil. Cette hypothèse est aussi approuvée en utilisant des données et des échantillons de pays beaucoup plus récentes que celles des autres études. Les résultats ne confirment pas l’assertion que les taxes sur le commerce extérieur dépassent des autres sortes de taxe si le commerce extérieur accroêt en importance.

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Resumen Ingresos del tresoro y tributación al comercio exterior. — Este es un análisis comparativo a traves de países de la importancia de los impuestos al comercio exterior y su relatión con los ingresos per cápita y la dependencia del país del comercio. El test, basado en promedios para los a?os 1972–1978 y cubriendo 93 países, se conduce tanto para el comercio global de importatión y exportatión como para las exportaciones e importaciones separadamente. El resultado es que la tributación a las importaciones tiene una función fiscal considerablemente más importante que la tributación a las exportaciones. Esto es válido tanto para los países en desarrollo como para los países desarrollados considerados como grupo, a pesar de que la importancia de la tributación a las exportaciones puede variar considerablemente entre países en desarrollo particulares. La importancia fiscal de los impuestos al comercio declina en la medida que el ingreso per cápita aumenta, al menos desde el momento en que éste último sobrepasa un cierto umbral. Esta hipótesis ha sido continuada, utilizando datos y muestras de países mucho más recientes que en otros estudios. Los resultados de este test no confirman la exigencia que los impuestos al comercio exterior aumentan por sobre otros tipos de impuestos en la medida que el comercio exterior crese en importancia.