This paper explores the link between economic development and penile length.... The GDP maximizing size is around 13.5 centimetres.Those are from the abstract. Click here to read the paper.
Random Observations for Students of Economics
I am the Robert M. Beren Professor of Economics at Harvard University, where I teach introductory economics (ec 10). I use this blog to keep in touch with my current and former students. Teachers and students at other schools, as well as others interested in economic issues, are welcome to use this resource.