I think it's a major factor and if we want to see success as fans we need to be disciplined and be part if it.
The same group of players now being hesitant, hopeless and booed were playing some pretty slick skilful and solid football just a couple of months back. The SAME players. The difference is confidence.
First that freak goal in the derby, then a drop in form, then the boos. It's a vicious circle.
I know some will say that they're paid enough, they should man up, they're professional etc.but at the end of it all they're just humans and they have average human mental frailties.
As an experiment, get a thousand lads to dress in red, go into anfield and start booing and jeering each week. Let's see how that effects the team.