Economic growth and the human capital intensity of government spending

The paper models an economy in which long-run growth is driven by human-capital-intensive, private sector research and development, and shows how government spending affects growth through its impact on relative wages. The more human-capital-intensive government spending is relative to private spending, the greater the derived demand for and relative wage of human capital and, hence, the more costly is research and development. The private sector thus devotes fewer resources to research and development and the rates of innovation and economic growth are lower. The paper argues that these effects are likely to be negative, and possibly substantial, in the U.S. The paper's results also offer a plausible explanation for the insignificance of government spending in cross-country growth regressions in recent empirical studies.