AGDI a environ 300 publications actuellement.
2020 |
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| 1. | S.A., Nnanna & Acha-Anyi Asongu J P N Journal of Economic Structures, 9 (5), pp. 1-27, 2020. Abstract | Links | BibTeX | Tags: FDI, Sub-Saharan Africa, TFP, Trade @article{Asongu_107, author = {Nnanna & Acha-Anyi J P N Asongu S.A.}, url = {https://journalofeconomicstructures.springeropen.com/articles/10.1186/s40008-020-0189-4}, doi = {10.1186/s40008-020-0189-4}, year = {2020}, date = {2020-02-01}, journal = {Journal of Economic Structures}, volume = {9}, number = {5}, pages = {1-27}, abstract = {This study assesses the simultaneous openness hypothesis that trade modulates foreign direct investment (FDI) to induce positive net effects on total factor productivity (TFP) dynamics. Twenty-five countries in Sub-Saharan Africa and data for the period 1980 to 2014 are used. The empirical evidence is based on the Generalized Method of Moments. First, trade imports modulate FDI to overwhelmingly induce positive net effects on TFP, real TFP growth, welfare TFP and real welfare TFP. Second, with exceptions on TFP and welfare TFP where net effects are both positive and negative, trade exports modulate FDI to overwhelmingly induce positive net effects on real TFP growth and welfare real TFP. In summary, the tested hypothesis is valid for the most part. Policy implications are discussed.}, keywords = {FDI, Sub-Saharan Africa, TFP, Trade}, pubstate = {published}, tppubtype = {article} } This study assesses the simultaneous openness hypothesis that trade modulates foreign direct investment (FDI) to induce positive net effects on total factor productivity (TFP) dynamics. Twenty-five countries in Sub-Saharan Africa and data for the period 1980 to 2014 are used. The empirical evidence is based on the Generalized Method of Moments. First, trade imports modulate FDI to overwhelmingly induce positive net effects on TFP, real TFP growth, welfare TFP and real welfare TFP. Second, with exceptions on TFP and welfare TFP where net effects are both positive and negative, trade exports modulate FDI to overwhelmingly induce positive net effects on real TFP growth and welfare real TFP. In summary, the tested hypothesis is valid for the most part. Policy implications are discussed. |
2019 |
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| 2. | Asongu, Nicholas Odhiambo Simplice M A Financial Innovation, 2019. Abstract | Links | BibTeX | Tags: Banks, Efficiency, Lending rates, Sub-Saharan Africa @article{Asongu_272, author = {Nicholas Odhiambo M Simplice A. Asongu}, url = {https://jfin-swufe.springeropen.com/articles/10.1186/s40854-019-0120-x?fbclid=IwAR2N7Ase_Ke0iLStgvnlqz9cNCIzyd3mYZkOo98P9Z8lLCEoM7ul-9CXbaI}, doi = {10.1186/s40854-019-0120-x}, year = {2019}, date = {2019-02-01}, journal = {Financial Innovation}, abstract = {There is a growing body of evidence that interest rate spreads in Africa are higher for big banks compared to small banks. One concern is that big banks might be using their market power to charge higher lending rates as they become larger, more efficient, and unchallenged. In contrast, several studies found that when bank size increases beyond certain thresholds, diseconomies of scale are introduced that lead to inefficiency. In that case, we also would expect to see widened interest margins. This study examines the connection between bank size and efficiency to understand whether that relationship is influenced by exploitation of market power or economies of scale. Using a panel of 162 African banks for 2001–2011, we analyzed the empirical data using instrumental variables and fixed effects regressions, with overlapping and non-overlapping thresholds for bank size. We found two key results. First, bank size increases bank interest rate margins with an inverted U-shaped nexus. Second, market power and economies of scale do not increase or decrease the interest rate margins significantly. The main policy implication is that interest rate margins cannot be elucidated by either market power or economies of scale. Other implications are discussed.}, keywords = {Banks, Efficiency, Lending rates, Sub-Saharan Africa}, pubstate = {published}, tppubtype = {article} } There is a growing body of evidence that interest rate spreads in Africa are higher for big banks compared to small banks. One concern is that big banks might be using their market power to charge higher lending rates as they become larger, more efficient, and unchallenged. In contrast, several studies found that when bank size increases beyond certain thresholds, diseconomies of scale are introduced that lead to inefficiency. In that case, we also would expect to see widened interest margins. This study examines the connection between bank size and efficiency to understand whether that relationship is influenced by exploitation of market power or economies of scale. Using a panel of 162 African banks for 2001–2011, we analyzed the empirical data using instrumental variables and fixed effects regressions, with overlapping and non-overlapping thresholds for bank size. We found two key results. First, bank size increases bank interest rate margins with an inverted U-shaped nexus. Second, market power and economies of scale do not increase or decrease the interest rate margins significantly. The main policy implication is that interest rate margins cannot be elucidated by either market power or economies of scale. Other implications are discussed. |
2014 |
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| 3. | Ssozi, Simplice Asongu John A 2014. Abstract | Links | BibTeX | Tags: output per worker, remittances, Sub-Saharan Africa, Total Factor Productivity @workingpaper{Ssozi2014, title = {The Effects of Remittances on Output per Worker in Sub-Saharan Africa: A Production Function Approach}, author = {Simplice Asongu A John Ssozi}, editor = {African 2014 Governance and Development Institute WP/27/14}, url = {http://www.afridev.org/RePEc/agd/agd-wpaper/The-Effects-of-Remittances-on-Output-per-Worker-in-Sub-Saharan-Africa(1).pdf}, year = {2014}, date = {2014-08-01}, abstract = {This paper uses a production function to examine the channels through which remittances affect output per worker in 31 Sub-Saharan Africa (SSA) countries from 1980-2010. We find that remittances directly increase output per worker if complemented with education. The indirect effects vary with the economic characteristics of the recipient nations: while remittances have increased human capital among the low-income nations, among the upper-middle-income nations, they have mostly increased total factor productivity, but are still inversely related to factor inputs among the lower-middle-income nations of SSA. Finally, remittances are more effective when institutional risk is reducing.}, keywords = {output per worker, remittances, Sub-Saharan Africa, Total Factor Productivity}, pubstate = {published}, tppubtype = {workingpaper} } This paper uses a production function to examine the channels through which remittances affect output per worker in 31 Sub-Saharan Africa (SSA) countries from 1980-2010. We find that remittances directly increase output per worker if complemented with education. The indirect effects vary with the economic characteristics of the recipient nations: while remittances have increased human capital among the low-income nations, among the upper-middle-income nations, they have mostly increased total factor productivity, but are still inversely related to factor inputs among the lower-middle-income nations of SSA. Finally, remittances are more effective when institutional risk is reducing. |
