Marilyn Harris:
> Probably in a comparison from species-to-species but if you are
> comparing
> size in a single species over time perhaps it is not such a direct
> relationship? Maybe, though it is a function over vast periods of time
> (tens
> or hundreds of thousands of years)?

Yes, since the structural makeup of the brain is also very important,
differences in relative size alone do not account for all intelligence
differences between or within species. This does not mean, however, that
relative brain size is irrelevant, else why mention its progression at all
in discussions of the evolution of homo sapiens sapiens (wise, wise man)? So
brain size is a factor in intelligence, just not the only factor.