Dan -
you know, I'd like to think of myself as someone who pays little attention to and is rarely influenced by the artifcial concepts and constructs -- like "par" -- that the world and the minions of organized society seem compelled to want to place on us. But, goshdarnit, I DO pay attention to "par" when I'm playing golf, and it DOES influence the way I play, and I'm pleased and proud when I match par on a given hole and disheartened and almost depressed when I don't. Now, I won't for a second say this is a GOOD thing; in fact, I'm almost sure that better players and more experienced players and smarter players don't pay attention to par in the same way I do (me, who is not a very good golfer at all, and still a relatively inexperienced one.) Maybe one day I won't either. BUT, to answer your question, even someone like me pays a lot LESS attention to par when my friends and I have a little match play going than when, say, I'm playing by myself or just keeping score for myself.
Peter