"There is not conclusive evidence, however, to substantiate a clear relationship between the 65-year steady reduction in the top tax rates and economic growth."

"There is not conclusive evidence, however, to substantiate a clear relationship between the 65-year steady reduction in the top tax rates and economic growth." However: "However, the top tax rate reductions appear to be associated with the increasing concentration of income at the top of the income distribution." https://graphics8.nytimes.com/news/business/0915taxesandeconomy.pdf https://graphics8.nytimes.com/news/business/0915taxesandecon...