Absolutely. Then puberty hits and the brilliance seems to take a huge dip. I guess obsessing about sex takes a lot of brainpower. Just a hypothesis though.
According to The Male Brain, by psychiatrist Louann Brizendine, males have 2.5x the space devoted to sexual drive in the hypothalamus compared to females.
By the time males reach puberty, guy’s sexual occupation and fertile female tracking circuits run in the background non-stop like an unkillable daemon process.
That’s absolutely going to divert brainpower.