Not arbitrary! Those are not small effect sizes. To determine that someone's neurological development is such that they are not at the same level of risk for alcohol dependence as the general population, requires a test that doesn't exist. Moreover there is no need for such a test to exist because simple rules work better than complex rules. The drinking age law is simple and effective.
Moreover there is no need for such a test to exist because simple rules work better than complex rules.
That rather depends on your definition of "better".
An even simpler rule is two words: "No alcohol" -- for everyone. As I recall, the US Prohibition wasn't such a great success, though.
This thread is intended to provide a space for 'crazy' ideas. Ideas that spontaneously come to mind (and feel great), ideas you long wanted to tell but never found the place and time for and also for ideas you think should be obvious and simple - but nobody ever mentions them.
This thread itself is such an idea. Or rather the tangent of such an idea which I post below as a seed for this thread.
Rules for this thread:
If this should become a regular thread I suggest the following :