A few reasons I can think of:
b) Fear of Failure - This was all the rage back in the '80's when I last studied psychology so I have no idea about the status of it now but the gist then was that there were serious sexual differences in fear of failure. Men were apparently much better at saying "If I try and fail, that sucks but I'll live" than women were. Every chess game is an opportunity to fail and if you are very afraid of that, it makes sense to never set up the pieces.
Actually, I frequently find that the reverse is true when men are facing women as opposed to other men. While many guys and groups of guys I've encountered display great confidence in their ability to win against a girl or girls, they also fear the idea of losing to a girl due to the social stigma that losing to a girl is shameful and somehow makes you 'less' of a man. I have also seen guys take lots of shit from their buddies for losing to a girl, which only reinforces this stigma. It would be nice if this perception that a guy who loses to a girl must be weak and the accompanying perception that a girl who wins against a guy is somehow more impressive than if she'd beaten another girl would go away, but I don't see that happening for a long time.
I've seen men get harassed on here for "Losing to a girl" even when she was much higher rated. I don't understand why more ''girls" don't take offence at this attitude.
A few reasons I can think of:
b) Fear of Failure - This was all the rage back in the '80's when I last studied psychology so I have no idea about the status of it now but the gist then was that there were serious sexual differences in fear of failure. Men were apparently much better at saying "If I try and fail, that sucks but I'll live" than women were. Every chess game is an opportunity to fail and if you are very afraid of that, it makes sense to never set up the pieces.
Actually, I frequently find that the reverse is true when men are facing women as opposed to other men. While many guys and groups of guys I've encountered display great confidence in their ability to win against a girl or girls, they also fear the idea of losing to a girl due to the social stigma that losing to a girl is shameful and somehow makes you 'less' of a man. I have also seen guys take lots of shit from their buddies for losing to a girl, which only reinforces this stigma. It would be nice if this perception that a guy who loses to a girl must be weak and the accompanying perception that a girl who wins against a guy is somehow more impressive than if she'd beaten another girl would go away, but I don't see that happening for a long time.