I find it hard to come up with a scenario where there could be selection for intelligence.
Try selection for creativity. Specifically creativity displayed as part of mating behavior. Song, Dance, Art.
Why are rock and movie stars perceived as desirable mates? Why was an old fat bald Picasso considered sexy?
Creativity then drives {intelligence} as a cofactor to being more creative, but there is no direct link between IQ and creativity.
we are limited in our ability to understand
by our ability to understand
RebelAAmerican.Zen[Deist
... to learn ... to think ... to live ... to laugh ...
to share.