Here is a conclusion of a 2012 CRS report titled “Taxes and the Economy: An Economic Analysis of the Top Tax Rates Since 1945 (Updated)”
It is reasonable to assume that a tax rate change limited to a small group of taxpayers at the top of the income distribution would have a negligible effect on economic growth.
The report isn’t conclusive as the report looks at their association and not causation, but the report reinforces (to me anyways) that the Republicans need a broader solution to 1) achieving economic growth and 2) producing growth that is more inclusive. There are all sorts of ways to evaluate economic policy including GDP growth and its allocation, labor participation, unemployment, etc.. Economic growth seems to be the only metric Republicans talk or care about and even if we can growth the economy, we still need to make sure it “works for everyone.”
You can read the rest here.