Define "in groups". You seem keen to set boundary conditions where men are all perfectly sociable and level-headed, while women are all histrionic ninnies.

Yes, if you compare a quiet business meeting between amicable business partners and a girl's night out bender, the chaps seem like the calm, collected sort. As we all know, those are the only broad types of groups men and women collect in. There are no super-majority-male gangs, sports teams, sports team fans, stag parties, and the like where men act like total histrionic tits. No sirree, never happens. Lads are chads all day, every day, in all company, right?