[Eli5] what’s the meaning of the ratio brain size/body mass? Why a bigger brain isn’t alone a sign of bigger intelligence? What has body mass to do with it?

Question

[Eli5] what’s the meaning of the ratio brain size/body mass? Why a bigger brain isn’t alone a sign of bigger intelligence? What has body mass to do with it?

In: Biology

Answer 1

The bigger the brain the more “computing power” it has sure but shape, composition and.. smoothness… Has a lot to do with it too.

Also body mass is in there too because the higher the body mass the more background processes the brain needs to stay on top of, thus lowering the amount of what we’d call intelligence