The other way around as well. High population growth causes slow economic growth /per capita/ (because the available income is distributed among more people).

The other way around as well. High population growth causes slow economic growth /per capita/ (because the available income is distributed among more people). In the book "Poor Economics" the authors show how poor parents tent to invest most resources they have in only child's education. All the other children get much less education and therefore only low paying jobs, thus remain poor. Less population growth would have a direct positive economic effect on the society's average level of education. High population growth is also very expensive in terms of public services, you need to build more schools, hospitals, police, etc. All that investment in /quantity/ prevents you from investing it in /quality/.