The objectives of this paper are to verify the linear and the non-linear effects of infrastructural development on inclusive human development in Africa. The results of the system GMM estimations show a positive effect of infrastructural development on inclusive development across all the infrastructural development indexes employed, except the ICT infrastructural composite index which presents an insignificant negative effect. Besides, a non-linear effect of infrastructures on inclusive development was established across all the infrastructure indicators except for the ICT indicator. Negative thresholds for complementary policies are established for the African Infrastructure Development Index (AIDI) and the transport index while positive thresholds are apparent for the electricity index and the water and sanitation infrastructure index (WSS). Accordingly, in order to sustain the positive incidence of the AIDI and transport index on human development, complementary policies should be engaged to avoid an overall negative effect on human development when the indexes are respectively, 31.12% and 25.56%. In the same vein, the electricity index and WSSI should exceed critical levels of respectively 49.79% and 41.92%, to engender an overall positive effect on inclusive human development.

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This article investigates the impact of microstructure factors on asset pricing in some African stock markets. We use data on stocks listed on the Johannesburg Stock Exchange, the “Bourse Régionale des Valeurs Mobilières,” and the Nigeria Stock Exchange, and we consider international portfolio management from 2000 to 2014. Generalized least square and fixed effect are estimation methods used to highlight the effect of microstructure variables on expected return. At the same time, panel smooth transition regression (PSTR) modeling is considered to identify the thresholds in this effect. The results show that liquidity and to a lesser extent the number of trading days are the most common significant microstructure variables for all the studied markets. However, other variables’ effects on the return are specific to the considered stock markets. Furthermore, the PSTR estimator reveals that the impact of indicated factors on asset pricing is not linear because it produces a double threshold between return and microstructure.

The main objective of this paper is to verify the effect of foreign debt on economic growth in sub-Saharan African sub-regions from 1980 to 2017. The paper applies the Generalized Method of Moments (GMM) with robust standard deviations using the Lewbel's estimator (2012). Results indicate that foreign debt significantly enhances growth in four zones (SADC, EAC, CEMAC and ECOWAS) with different bearable thresholds. This seems to suggest that creditors may be aware that countries do not exceed their bearable threshold at least at regional level.