[FOM] Which is clearer, "integer" or "symbol"?

[Timothy Y. Chow]

On Mon, 3 Jan 2011, Richard Heck wrote:
> There is quite a lot of research that shows [...]

> are you aware that there is very good evidence that [...]

Can you provide references for these claims?  Particularly in the social 
sciences, where standards of rigor are lower than in f.o.m., I think it's 
important to scrutinize the original papers to see exactly what they do 
and don't demonstrate.

Tim