Ed Lopez wrote:
In a Forbes article last year, a professor of health at Indiana University
notes that since the increase in the legal drinking age to 21 (1987), total
amount of alcohol consumed dropped but the incidence of EXCESSIVE drinking
increased among 18-20 year olds.

1. any takers on why?
It's an obvious point, but do the Indiana professor's findings control for
other factors, such as price of alcohol, price of substitutes & complements
(including changes in legal sanctions for consuming other drugs, police
enforcement etc), income, and so on?  Without knowing about what is being
held constant and what isn't, how can we say anything about the effect of a
particular law at the margin?

Alex Robson
Australian National University



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