I just read the research article this press is based on,
which can be found at:
http://homenet.andrew.cmu.edu/progress/research.html
I find it thoughtful, careful, and persuasive. Contrary to speculation on this list, the study gives clear indications of direction of causality. Furthermore, the study fits with my experience.
Robin Hanson
hanson@econ.berkeley.edu http://hanson.berkeley.edu/
RWJF Health Policy Scholar, Sch. of Public Health 510-643-1884
140 Warren Hall, UC Berkeley, CA 94720-7360 FAX: 510-643-8614