AI personality group effect?

[Q]

Ooops, I changed by mistake: The Dominion and the Ixaris have personality 0 not the Earth Alliance and the Praetorian. Sorry. But I am still not sure that personality 4 makes the AI more aggressive. Is it just used to mark aggressive AI's for the player selection, but has no effect on the AI itself??

[dumbluck]

I think it is just a marker that the game uses when choosing random AI opponents when starting a new game.