>> Man can be far from being best fit for raising children and still forward his genes to next generation.
> This would seem to predict that men show less variance than women in whether or not they forward their genes
Not necessarily. Ratio of variance of whether women and men forward their genes is influenced with many factors. Extreme men can have less variance then equally extreme women, but average women can have less variance because there is very few extreme women. Also what I'm referring to is about times that shaped modern day men and women. Child of extreme woman had very small chances of surviving back then. Child of extreme man would have had better chances.
> Why would too high intelligence make someone a worse parent?
I'd want to back that up with something solid but only things that come to my mind are anecdotes of absent minded geniuses, emotional volatility associated with intelligence, social misalignment that could get a person in serious trouble (Archimedes?) or simply loosing interest in own 'plain' children.
> This would seem to predict that men show less variance than women in whether or not they forward their genes
Not necessarily. Ratio of variance of whether women and men forward their genes is influenced with many factors. Extreme men can have less variance then equally extreme women, but average women can have less variance because there is very few extreme women. Also what I'm referring to is about times that shaped modern day men and women. Child of extreme woman had very small chances of surviving back then. Child of extreme man would have had better chances.
> Why would too high intelligence make someone a worse parent?
I'd want to back that up with something solid but only things that come to my mind are anecdotes of absent minded geniuses, emotional volatility associated with intelligence, social misalignment that could get a person in serious trouble (Archimedes?) or simply loosing interest in own 'plain' children.