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This study tests Wagner's law in Nigeria in both the short and long-run using the autoregressive distributed lag (ARDL) technique of estimation and controlling for structural breaks between the periods 1981-2016. Results showed that both in the short and long-run, evidence pointed to a negative but insignificant relationship between government expenditure and economic growth, with a larger negative effect in the long-run. The study controlled for oil export earnings, which was found to positively and significantly influence government spending in both the short and long-run. Results did not support the Wagner law. It was therefore recommended that the economy be diversified into more labour intensive sectors so as to increase output and income per capita and so that government expenditure can be based more on tax receipts than on oil export earnings as more financially responsible households will demand increase in government expenditure as their level of income increases, especially for the provision of public sector services the households currently bear. [ABSTRACT FROM AUTHOR]

There is no gainsaying in the fact that one of the objectives of Sustainable Development Goals (SDGs) is to attain poverty hitch-free by 2030. However, the continuous increase in poverty level has generated a lot of debates among policymakers, scholars and economists while government have also been continuously formulating different policies to avert this ugly situation. Various studies have documented the contributions of human capital development to poverty alleviation in Nigeria with special reference to MDGs and their results might not be transmitted to achieving the SDGs in Nigeria. This study therefore addresses this issue. The paper examines the impact of human capital development on poverty alleviation in Nigeria over the last two and half decades (1990-2017). The results obtained shall be used to project into the future as to whether investments in human capital expenditure has potential to achieve the objectives of Sustainable Development Goals (SDGs) by 2030. The study adopts a log-linear regression model formulated sequentially from the Solow's neo-classical growth theory and standard Cobb-Douglas production function. The prevalence of poverty rate as a percentage of total population was regressed on unemployment rate, real government expenditures on education and health. The result of the estimated model reveals that real government expenditure on education and unemployment rate both have significant effect on the prevalence of poverty in Nigeria. However, real government expenditure on health has negative but insignificant inelastic effect on the prevalence of poverty rate in Nigeria during the period under review. On this basis, the paper therefore suggests that government should invest more in education and facilitate the integration of vocational training programmes and courses as part of academic curriculum in schools at all levels. Also, government should increase investment in the health sector to ensure improvement and access to quality health facilities in the country, if human capital investment should catalyze SDGs achievement. [ABSTRACT FROM AUTHOR]