Unified growth theory predicts that the timing of the fertility transition is a key determinant of contemporary comparative development, as it marks the onset of the take-off to sustained growth. Neoclassical growth theory presupposes a take-off, and explains comparative development by...

We hypothesize that cultural appreciation of hard work and thrift,the Protestant ethic according to Max Weber,had a pre-Reformation origin.The proximate source of these values was,according to the proposed theory,the Catholic Order of Cistercians.In support,we first document an impact from the...