Instrumental Quantile Regression Research Articles

Technological change, completeness of financing microstructures, and impact on well-being and income inequality

Financing microstructures are increasingly recognized as critical for promoting financial inclusion and improving overall well-being in developing countries. In practice, the digital transformation in finance has the potential to accelerate the optimal functioning of financing microstructures, including households' access to microfinance and microinsurance. Increased access to finance can lead to a reduction in income inequality and overall well-being for households. This paper investigates the impact of access to digital finance and financing microstructures on household well-being and the reduction of income inequality. To achieve this, we use a combination of propensity score matching, double difference, and smooth instrumental quantile regression as estimation methods with two periods of survey data. Specifically, the paper uses the FinScope consumer data (2016) and the Harmonized Living Standards Measurement Study (2018) from Togo in a comparative perspective. The results suggest that access to both digital finance and financing microstructure is a cultural game-changer that significantly improves overall household well-being and contributes to reducing income inequality.

A worldwide tourism-extended Environmental Kuznets Curve. New approaches in a comparative analysis

This work aims to empirically study the exogenous impact of the tourism sector on the environment and the validity of the conventional and tourism-extended Environmental Kuznets Curve (EKC) in 69 countries from America, Europe, and Asia-Oceania between 1995 and 2016. We introduce several interesting approaches in our analysis: the consideration of three heterogeneous regions to isolate the relationship between tourism activity and environmental quality from local conditions, an environmental-legal index to consider the effect of environmental regulations on pollution, and an instrumental quantile regression methodology to avoid possible endogeneity problems. Our results show that tourism activity causes environmental damage, measured by per capita carbon dioxide emissions. We also find evidence suggesting the fulfillment of the conventional and tourism-extended EKC hypotheses for the full sample and American and Asia-Oceania countries, but not European ones. Lastly, an important policy implication emerging from our analysis refers to the importance of regulations in mitigating environmental degradation, especially in high-polluted countries, suggesting the need for governments to take an active role in this matter to ensure sustainable and responsible tourism.

Reformulating the tourism-extended environmental Kuznets curve: A quantile regression analysis under environmental legal conditions

This work aims to empirically study the environmental Kuznets curve (EKC) in a model that takes into account the tourism sector. We use two novel approaches in this framework: an own developed environmental legal index and an instrumental quantile regression methodology. Our study comprises 18 Latin American countries between 1995 and 2013. We have found that tourism activity causes carbon emissions increases but, because of the restrictions imposed by environmental regulations, further tourism activity can mitigate these adverse environmental effects, mainly in high-polluted countries. These results suggest a step forward in the tourism-extended EKC estimations: they indicate the need for analysis considering the heterogeneities in environmental conditions across countries and the role of environmental regulation within this framework.

SPECIFICATION TESTING IN NONPARAMETRIC INSTRUMENTAL QUANTILE REGRESSION

There are many environments in econometrics which require nonseparable modeling of a structural disturbance. In a nonseparable model with endogenous regressors, key conditions are validity of instrumental variables and monotonicity of the model in a scalar unobservable variable. Under these conditions the nonseparable model is equivalent to an instrumental quantile regression model. A failure of the key conditions, however, makes instrumental quantile regression potentially inconsistent. This article develops a methodology for testing the hypothesis whether the instrumental quantile regression model is correctly specified. Our test statistic is asymptotically normally distributed under correct specification and consistent against any alternative model. In addition, test statistics to justify the model simplification are established. Finite sample properties are examined in a Monte Carlo study and an empirical illustration is provided.

The Intergenerational Impact of China's New Rural Pension Scheme

The Intergenerational Impact of China's New Rural Pension Scheme

Remittances, the diffusion of information and industrialisation in Africa

ABSTRACTThis study examines the role of information and communication technology (ICT) on remittances for industrialisation in a panel of 49 African countries for the period 1980–2014. The empirical evidence is based on three simultaneity-robust estimation techniques, namely: (i) Instrumental Fixed Effects (FE) in order to control for the unobserved heterogeneity; (ii) Generalised Method of Moments (GMM) to account for persistence in industrialisation; and (iii) Instrumental Quantile Regressions (QR) to control for initial levels of industrialisation. Our best estimators are from FE and QR estimations because the GMM regression outputs largely fail post-estimation diagnostic tests. The following findings are established: (i) There are positive marginal effects from the interaction between remittances and ICT in the FE regressions whereas there are negative marginal impacts from the interaction between remittances and ICT; (ii) Interactions between remittances and mobile phone penetration are positive in the bottom and 90th quantile whereas the interaction between internet penetration and remittances is positive in the bottom and top quantiles of the industrialisation distribution. Overall, the role of ICT in remittances for industrialisation is much more apparent when existing levels of industrialisation are accounted for.

Enhancing ICT for quality education in sub-Saharan Africa

This research assesses the relevance of information and communication technology (ICT) in primary education quality in a panel of 49 Sub-Saharan African countries for the period 2000–2012. The empirical evidence is based on Two Stage Least Squares (2SLS) and Instrumental Quantile regressions (IQR). From the 2SLS: (i) mobile phone and internet penetration rates reduce poor quality education and enhancing internet penetration has a net negative effect of greater magnitude. From the IQR: (i) with the exception of the highest quantile for mobile phone penetration and top quantiles for internet penetration, ICT consistently has a negative effect on poor education quality with a non-monotonic pattern. (ii) Net negative effects are exclusively apparent in the median and top quantiles of internet-related regressions. It follows that enhancing internet penetration will benefit countries with above-median levels of poor education quality while enhancing internet penetration is not immediately relevant to reducing poor education quality in countries with below-median levels of poor education quality.

Remittances, finance and industrialisation in Africa

The paper assesses how remittances directly and indirectly affect industrialisation using a panel of 49 African countries for the period 1980–2014. The indirect impact is assessed through financial development channels. The empirical evidence is based on three interactive and non-interactive simultaneity-robust estimation techniques, namely: (i) Instrumental Fixed Effects (FE) to control for the unobserved heterogeneity; (ii) Generalised Method of Moments (GMM) to control for persistence in industrialisation and (iii) Instrumental Quantile Regressions (QR) to account for initial levels of industrialisation. The non-interactive specification elucidates direct effects of remittances on industrialisation whereas interactive specifications explain indirect impacts. The findings broadly show that for certain initial levels of industrialisation, remittances can drive industrialisation through the financial development mechanism. Policy implications are discussed.

Remittances, Finance and Industrialisation in Africa

The paper assesses how remittances directly and indirectly affect industrialisation using a panel of 49 African countries for the period 1980-2014. The indirect impact is assessed through financial development channels. The empirical evidence is based on three interactive and non-interactive simultaneity-robust estimation techniques, namely: (i) Instrumental Fixed Effects (FE) to control for the unobserved heterogeneity; (ii) Generalised Method of Moments (GMM) to control for persistence in industrialisation and (iii) Instrumental Quantile Regressions (QR) to account for initial levels of industrialisation. The non-interactive specification elucidates direct effects of remittances on industrialisation whereas interactive specifications explain indirect impacts. The findings broadly show that for certain initial levels of industrialisation, remittances can drive industrialisation through the financial development mechanism. Policy implications are discussed.

Enhancing ICT for Quality Education in Sub-Saharan Africa

This research assesses the relevance of information and communication technology (ICT) in primary education quality in a panel of 49 Sub-Saharan African countries for the period 2000-2012. The empirical evidence is based on Two Stage Least Squares (2SLS) and Instrumental Quantile regressions (IQR). From the 2SLS: (i) mobile phone and internet penetration rates reduce poor quality education and enhancing internet penetration has a net negative effect of greater magnitude. From the IQR: (i) with the exception of the highest quantile for mobile phone penetration and top quantiles for internet penetration, ICT consistently has a negative effect on poor education quality with a non-monotonic pattern. (ii) Net negative effects are exclusively apparent in the median and top quantiles of internet-related regressions. It follows that enhancing internet penetration will benefit countries with above-median levels of poor education quality while enhancing internet penetration is not immediately relevant to reducing poor education quality in countries with below-median levels of poor education quality.

Remittances, the Diffusion of Information and Industrialisation in Africa

This study examines the role of information and communication technology (ICT) on remittances for industrialisation in a panel of 49 African countries for the period 1980-2014. The empirical evidence is based on three simultaneity-robust estimation techniques, namely: (i) Instrumental Fixed Effects (FE) in order to control for the unobserved heterogeneity; (ii) Generalised Method of Moments (GMM) to account for persistence in industrialisation; and (iii) Instrumental Quantile Regressions (QR) to control for initial levels of industrialisation. Our best estimators are from FE and QR estimations because the GMM regression outputs largely fail post-estimation diagnostic tests. The following findings are established: (i) There are positive marginal effects from the interaction between remittances and ICT in the FE regressions whereas there are negative marginal impacts from the interaction between remittances and ICT; (ii) Interactions between remittances and mobile phone penetration are positive in the bottom and 90th quantiles whereas the interaction between internet penetration and remittances is positive in the bottom and top quantiles of the industrialisation distribution. Overall, the role of ICT in remittances for industrialisation is much more apparent when existing levels of industrialisation are accounted for. The findings contribute to the debates on the importance of external flows and information infrastructure in economic growth as well as the relevance of remittances in driving economic development in environments where institutions are weak. The value of the study to scholars and policy makers also builds on the fact that the potential for ICT and remittances in Africa can be leveraged to address development challenges on the continent such as the low level of industrialisation.

Basic formal education quality, information technology, and inclusive human development in sub‐Saharan Africa

AbstractThis study assesses the role played by basic formal education on the impact of information technology on inclusive human development in sub‐Saharan African countries during the period 2000–2012. The study aims to answer one critical question: What is the relevance of basic formal education in the effect of mobile phone penetration on inclusive human development in sub‐Saharan Africa when initial levels of inclusive human development are taken into account? The empirical evidence is based on instrumental quantile regressions. The findings of this study show that poor primary education dampens the positive effect of mobile phone penetration on inclusive human development. This finding should be understood from the perspective that the education quality indicator represents a policy syndrome because of the way it is computed, notably, the ratio of pupils to teachers. Hence, an increasing ratio indicates decreasing quality of education. It follows that decreasing quality of education dampens the positive effect of mobile phone on inclusive development. This tendency is consistent throughout the conditional distribution of inclusive sustainable human development. Policy implications are discussed.

Basic Formal Education Quality, Information Technology and Inclusive Human Development in Sub-Saharan Africa

This study assesses the relevance of basic formal education in information technology for inclusive human development in 49 countries in sub-Saharan Africa for the period 2000-2012. The question it aims to answer is the following: what is the relevance of basic formal education in the effect of mobile phone penetration on inclusive human development in sub-Saharan Africa when initial levels of inclusive human development are taken into account? The empirical evidence is based on instrumental quantile regressions. Poor primary education dampens the positive effect of mobile phone penetration on inclusive human development. This main finding should be understood in the perspective that, the education quality indicator represents a policy syndrome because of the way it is computed, notably: the ratio of pupils to teachers. Hence, an increasing ratio indicates decreasing quality of education. It follows that decreasing quality of education dampens the positive effect of mobile phone on inclusive development. This tendency is consistent throughout the conditional distribution of inclusive human development. Policy implications for sustainable development are discussed.

Information asymmetry and market power in the African banking industry

This study investigates the role of information sharing offices and its association with market power in the African banking industry based on a panel of 162 banks from 42 countries for the period 2001–2011. Five simultaneity-robust estimation techniques are employed: Two Stage Least Squares; Instrumental Fixed Effects to control for unobserved heterogeneity; Instrumental Tobit regressions to control for the limited range in the dependent variable; Generalised Method of Moments (GMM) to control for persistence in market power; and Instrumental Quantile Regressions (QR) to account for initial levels of market power.The following findings have been established from non-interactive regressions. First, the effects of information sharing offices are significant in Two Stage Least Squares, with a positive effect from private credit bureaus. Second, the GMM results suggest that public credit registries increase market power. Third, from Quintile Regressions, private credit bureaus consistently increase market power throughout the conditional distributions of market power. Given that the above findings are contrary to theoretical postulations, we extend the analytical framework with interactive regressions in order to assess whether the anticipated effects can be established if information sharing offices are increased. Our extended findings show a negative net effect from public credit registries on market power in GMM regressions, and negative net impacts from public credit registries on market power in the 0.25th and 0.50th quartiles of market power.

Smoothing or Strengthening the Great Gatsby Curvee? The Intergenerational Impact of China's New Rural Pension Scheme

We examine the heterogeneous and dynamic impact of China’s New Rural Pension Scheme on intergenerational wealth dependence using a nationally representative longitudinal household survey covering the period 2011–13. We adopt an instrumental quantile regression–discontinuity design to address the endogeneity of partial compliance of the pension scheme and the observed individual heterogeneity. Overall, we find that the pension scheme smooths wealth dependence between generations in the short term, but strengthens the persistence of assets among the wealthiest households in the medium term. The mechanisms underlying these distributional effects are intergenerational transfers, time reallocation, and filial adjustments of the wealth portfolio. Complementary policy interventions, particularly for the poor across generations, would be needed to neutralize the distributional impact of the pension in terms of intergenerational wealth persistence.

ICT, information asymmetry and market power in African banking industry

This study assesses how market power in the African banking industry is affected by the complementarity between information sharing offices and information and communication technology (ICT). The empirical evidence is based on a panel of 162 banks consisting of 42 countries for the period 2001–2011. Three estimation techniques are employed, namely: (i) instrumental variable Fixed effects to control for the unobserved heterogeneity; (ii) Tobit regressions to control for the limited range in the dependent variable; and (iii) Instrumental Quantile Regressions (QR) to account for initial levels of market power. Whereas results from Fixed effects and Tobit regressions are not significant, with QR: (i) the interaction between internet penetration and public credit registries reduces market power in the 75th quartile and (ii) the interaction between mobile phone penetration and private credit bureaus increases market power in the top quantiles. Fortunately, the positive net effects are associated with negative marginal effects from the interaction between private credit bureaus and mobile phone penetration. This implies that mobile phones could complement private credit bureaus to decrease market power when certain thresholds of mobile phone penetration are attained. These thresholds are computed and discussed.

The effect of reducing information asymmetry on loan price and quantity in the African banking industry

The purpose of this study is to assess how information sharing offices affect loan price and quantity in the African banking industry. The empirical evidence is based on a panel of 162 banks in 42 countries for the period 2001–2011. From the Generalised Method of Moments, public credit registries decrease loan price. With instrumental Quantile Regressions, two main findings are established. Public credit registries consistently decrease the price of loans whereas private credit bureaus consistently have the opposite effect. Public credit registries increase loan quantity in bottom quintiles (or banks associated with lower loan quantities) while private credit bureaus increase loan quantity in top quintiles (or banks associated with higher loan quantities).

Globalization and Inclusive Human Development in Africa

Abstract This study extents the literature on responses to a recent World Bank report on the African poverty tragedy by assessing the effect of globalisation on inclusive human development in 51 African countries for the period 1996–2011. Political, economic, social and general globalisation variables are used. The empirical evidence is based on Generalised Method of Moments (GMM) and Instrumental Quantile Regressions (IQR). While estimated coefficients are not significant in GMM results, for IQR, globalisation positively affects inclusive human development and the favourable effect is higher in countries with high initial levels of inclusive development. The main economic implication is that in the post-2015 development agenda, countries would benefit more from globalisation by increasing their levels of inclusive development.

Diaspora Remittance Inflow, Financial Development and the Industrialisation of Africa

The paper assesses how remittances directly and indirectly affect industrialisation in a panel of 49 African countries for the period 1980-2014. The indirect impact is assessed through financial development channels. The empirical evidence is based on three interactive and non-interactive simultaneity-robust estimation techniques, namely: (i) Instrumental Fixed Effects (FE) to control for the unobserved heterogeneity; (ii) Generalised Method of Moments (GMM) to control for persistence in industrialisation and (iii) Instrumental Quantile Regressions (QR) to account for initial levels of industrialisation. The non-interactive specification elucidates direct effects of remittances on industrialisation whereas interactive specifications explain indirect impacts. The findings broadly show that for certain initial levels of industrialisation, remittances can drive industrialisation through the financial development mechanism. Policy implications are discussed.

Reducing Information Asymmetry with ICT: A Critical Review of Loan Price and Quantity Effects in Africa

This study investigates loan price and quantity effects of information sharing offices with ICT, in a panel of 162 banks consisting of 42 African countries for the period 2001-2011.The empirical evidence is based on Generalised Method of Moments and Instrumental Quantile Regressions. Our findings broadly show that ICT with public credit registries decrease the price of loans and increase the quantity of loans. While the net effects from the interaction of ICT with private credit bureaus do not lead to enhanced financial access, corresponding marginal effects show that ICT can complement private credit bureaus to increase loan quantity and decrease loan prices when certain thresholds of ICT are attained. We compute and discuss the ICT thresholds that are required to make this possible.