I believe Thomas Sowell has written on this in several of his books, too, citing info from various countries in various times, as he often does. But he's only a genius, so what does he know.
At least part of its reality is explicable by pretty obvious mechanisms, but I don't know what percentage. Since its causation is largely unstudied, I wonder if it holds only with slow gradations, or if it would hold true with major changes. i.e., if the latter, the politician who radically slashed taxes and supercharged GDP while maintaining revenue would be pretty popular.