Further Statistical Debate on "Too Much Finance"

Cline critiques OECD findings on "too much finance," which seem to imply that the optimal amount of credit in an economy is zero, given the linear specification of the main tests. If these results were taken literally, there would be a radical policy implication: Growth would be maximized by completely eliminating credit finance. He then finds that the negative impact of additional finance on growth is reversed when the appropriate (purchasing-power-parity) per capita income is applied and country fixed effects are removed. Separate tests for countries with intermediated finance below and above 60 percent of GDP show a significant positive effect of finance on growth in the lower group but an insignificant effect in the higher group. He also responds to critics of his earlier study.

Data disclosure: The data underlying the figures in this analysis are available here [xlsx].