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In this paper, we estimate the efficiency of Metropolitan, Municipal, and District Assemblies (MMDAs) in Ghana, and investigate the impact of fiscal decentralization on the efficiency of local public goods and services delivery by MMDAs. Using data from composite budgets of all 216 MMDAs, we employ both nonparametric and parametric frontier methods to carry out the study. The results with regard to our two indicators of fiscal decentralization indicate that fiscal autonomy proxied by MMDAs' internally generated funds as a share of their total revenue has a positive influence on the efficiency of MMDAs whilst vertical imbalance-a high share of central government grants in MMDAs' total expenditure-does not improve the delivery of local goods and services by MMDAs in Ghana. The findings indicate a clear signal to policy managers to prioritize support to MMDAs in the mobilization of internally generated revenue.

The lingering policy dilemma facing many governments in sub-Saharan Africa in recent years is what can be done in the short to medium term to boost the output and incomes of individuals and enterprises in the informal sector, given the size and persistence of the sector in the region. In this paper we examine the structural impact of access and usage of digital technology by informal enterprises on labour productivity. Using a sample of non-farm informal enterprises in Nigeria, we employ IV LASSO techniques to carry out our analysis. The structural parameters of our IV LASSO estimates show that labour productivity is significantly higher for enterprises that use digital technology than for non-users. Further analysis reveals that benefits arise more strongly in larger enterprises in the upper segment of the informal sector. Our findings have key implications for the ongoing discussion on the role of digital technology and government regulatory and policy frameworks for ICT in the region.

AbstractIn this paper, we attempt to estimate the tax gap in the informal sector as well as the contributing factors of the tax losses in SSA countries using Ghana as a case study. Using micro data on non‐farm household enterprises obtained from the sixth round of the Ghana Living Standards Survey as well as data on quarterly tax payable by specified small scale enterprises derived from the Small Tax Payer office of the Ghana Revenue Authority, the findings show that the national potential and actual taxes in the informal sector are US$ 81 974 846 and US$ 25 023 273, respectively, reflecting an estimated national tax gap or loss of approximately US$ 56 951 573. Firm level variables such as type of business, urban location and experience of the firm significantly increase the propensity to pay tax and reduce the tax gap. Copyright © 2018 John Wiley & Sons, Ltd.

Abstract
Despite rapid economic growth in recent decades, informality remains a persistent phenomenon in the labor markets of many low- and middle-income countries. A key issue in this regard concerns the extent to which informality itself is a persistent state. Using panel data from Ghana, South Africa, Tanzania, and Uganda, this paper presents one of the very few analyses providing evidence on this question in the context of sub-Saharan Africa. Our results reveal an important extent of heterogeneity in the transition patterns observed for workers in upper-tier versus lower-tier informality. Given the limited alternative job opportunities available, particularly to those in lower-tier informal self-employment who often remain locked in a situation of inferior pay and conditions, specific policies that seek to enhance the livelihoods of workers in this most disadvantaged segment may be more relevant in the sub-Saharan context than policies that aim to reduce the regulatory barriers to formalization.

Using the Malmquist productivity index and panel data methods, we study the role of total human capital and its composition in the technological "catch-up" process and productivity growth via the channels of innovation and adoption of technology in a panel of 19 sub -Saharan African countries between 1960 and 2003. Our findings indicate different roles played by the composition of human capital and a follow-on consistent and significant contribution of total human capital to productivity growth. Primary and secondary school attainment (unskilled labour) contribute significantly to the adoption of technology(the main source of productivity growth in sub-Saharan Africa) whilst tertiary school attainment (skilled labour) plays a significant role in local innovation. Total human capital on the other hand, contribute more significantly to the adoption of technology and innovation. Technological "catch-up" remains a significant element in productivity growth in sub-Saharan Africa and economies with higher tertiary school attainment(skilled labour) and higher total human capital tend to contribute significantly to productivity growth through the channel of technological "catch-up". Our results rather point towards a circuitous depiction of the symbiotic characteristics of the composition of human capital in enhancing productivity growth in sub-Saharan Africa and hence efforts in scaling- up investments in human capital by governments, development partners etc should not be too concentrated on one composition of human capital.

Purpose
Using data from the sixth round of the Ghana Living Standards Survey, this paper aims to take a critical look at issues relating to the demand for education in Ghana.


Design/methodology/approach
In doing this, the paper develops a model for the determinants of household's educational expenditure using the full sample of data and an income-quintile disaggregated model of the determinants of household's educational expenditures. The study adopts robust empirical estimation techniques to estimate the model.


Findings
The paper finds that household resources importantly influence children's educational expenditures with wealthier households spending proportionately more in educating their children than poorer households; large-sized households spend more in terms of educational expenses than small-sized households reflecting largely the quantity of education purchased, given that quality and contextual factors matters for educational investments. Strikingly, the findings show that female headship is a significant positive predictor of households' demand for education. These findings provide valuable policy options relating to the goal of ensuring inclusive and quality education for all and promoting a lifelong learning by 2030.


Originality/value
While literature on the determinants of households' educational expenditures abound, very few of this literature focuses on sub-Saharan Africa. Consequently, this study makes an important contribution to the literature by providing evidence on the determinants of households' educational expenditure in the context of sub-Saharan Africa.

PurposeThe purpose of this paper is to comprehensively examine Ghana's tax reform programme and investigate whether it has facilitated the revenue mobilization capacity of the overall tax system and of individual taxes on the basis of estimates of tax buoyancies and elasticities.Design/methodology/approachThis study uses the proportional adjustment approach to estimate tax buoyancies and elasticities of the overall tax system and of individual taxes for the pre and post tax reform period over the 1970-2013 period.FindingsThe results show that in general, tax reforms had a positive influence on the overall tax structure and on the individual tax handles as evidenced in the more than unity buoyancy and elasticity. All the individual taxes, except excise duties, recorded buoyancies and elasticities of more than unity during the reform period.Practical implicationsTax authorities ought to move away from income-based taxation which discriminates against saving and investment, in favour of consumption-based taxes in conformity with international standards. Emphasis must also be placed on those taxes that have high revenue elasticities. These taxes include the personal, corporate, the Value Added Tax, and the import duties.Originality/valueIn this study, the paper extends and disaggregates the data on taxes, account for discretionary tax changes from the historical time series data, and use the adjusted historical time series data to estimate tax elasticity. The study therefore provides an in-depth understanding of the effects of the tax reforms on the overall tax system and of individual taxes in Ghana.

Attention on domestic resource mobilization-particularly in developing countries- has increased significantly in recent years. This stems from, among other things, recognition in the Sustainable Development Goals that further domestic funding is required for development needs, and the Addis Tax Initiative, which aims to foster fairer and more effective domestic resource mobilization. And whilst there is a recognition that many low- and middle-income countries could be collecting more in tax revenues, the answer to the question of just how much more is unclear. So-called tax effort studies have attempted to shed light on this question for many years and recent estimates suggest that many developing countries are not performing anywhere near their potential (i.e. exerting enough effort). This study makes two significant contributions to the tax effort literature. First, we find that the stochastic frontier approaches used in many recent studies are sensitive to empirical specification and the resulting tax effort scores are strongly influenced by outlying input observations. We employ the True Random Effects approach and find that tax effort scores are, on average, higher and more tightly distributed than previous studies suggest. Second, we enjoy improved data coverage due to using the most recent version of the UNUWIDER Government Revenue Dataset, alongside governance indicators from the V-Dem dataset. This allows us to present tax effort estimates for 50 per cent more observations than the next most complete study.

Recent developments in nanotechnology has increased the market value of nanoproducts in various industries. This has increased concerns associated with potential toxicity of nanoproducts to humans and the environments. Even though, green and biosynthesized nanoparticles are considered to be less toxic than chemically synthesized nanoparticles, they still possess some level of toxicity. Conventional toxicity assessments via human cells, live animals such as rat, frog or rabbit have several drawbacks including ethical issue and challenges involving the maintenance and development of cell cultures. Zebrafish (Danio rerio) is a transparent vertebrate fish that can reproduce rapidly. Its larvae develop in 5 days up to 3-5 cm long. It also possesses about 69% similar genetic profile, molecular mechanism, cell development and organ physiology as humans. Hence, it has the potential to be utilized as an alternative to humans or live animal models for initial drug screening and toxicity tests. European Union, USFDA and ICH have approved the use of zebrafish for toxicological evaluation of pharmaceutical products including nanomedicines. The article presents for the potential of zebrafish in preclinical evaluation of the toxicity of nanomaterials. It also discusses other potential applications, including medical imaging and environmental toxicity.

PurposeThe purpose of this paper is to investigate the effect of corruption and institutional governance indicators on capital flight in Sub-Saharan Africa.Design/methodology/approachUsing a Portfolio Choice Framework, the study employs two different estimation techniques as Generalized Method of Moment and Fixed Effect Regression on panel data sets of 32 countries in Sub-Saharan Africa over the period 2000-2012.FindingsThe variable of interest, corruption, retains its expected positive sign and statistically significant across all the estimations. The relationship remains very strong even when other equally important institutional variables such as regime durability, rule of law and independence of the executive are taken into account. This suggests that a higher perception of corruption among public authorities as in bribery, kickbacks in public procurement, embezzlement of public funds, among others facilitates an increase in capital outflow from SSA. The findings further indicate that regime durability and rule of law are important institutional variables that also significantly influence capital flights in SSA.Practical implicationsThe findings imply that institutional reforms should be encouraged if SSA is to win the war against corruption and by extension against capital flight. There should be a creation of democratic environment and good governance practices that foster stronger governance institutions, decline in corruption and better domestic investment climate to help reverse the high spate of capital flight in the region.Originality/valueThe main value of this paper is using the portfolio choice framework to analyze the relationship between capital flight and corruption in the Sub-Saharan African context.