A Professor of Economics at the University of Buenos Aires, Benegas Lynch provided empirical evidence demonstrating that modern monarchies tend to be far poorer than modern democracies. In response, Hoppe argued that monarchies tend to be poorer than democracies not because of intrinsic features of these political systems, but because African countries, populated by what Hoppe considers to be racially inferior people, are disproportionately monarchical whereas European countries are mostly democratic. Citing the book "Race, Evolution, and Behavior" by racialist psychologist J. Phillipe Rushton, Hoppe claimed that comparing African monarchies to European democracies would "lead to a systematic distortion of the evidence given that Caucasians have, on the average, a significantly lower degree of time preference than Negroids".