There can be (mainly nerves, I think), but it's not always the case.
For instance, Rod Jenkins. Two or three time IBO World Champion. Goes all over the world coaching, been the main player in all of the "Masters of the Barebow" videos. Rod is an amazing target archer--and he's also a deer-killing machine. Another myth that Rod will bust is "a gap shooter can't hit moving targets". Rod is an admitted gap shooter, and he's one of if not THE best aerial target shooter I've ever seen. Rod doesn't go into different "modes" depending on what he's shooting at.
There are folks that are better at shooting animals, there are folks that are better at shooting targets....and there are folks that are dang good at both.
Rod could be the exception to the rule. I never said it was the rule. What I usually notice is target shooters, worry too much about target skills to be good woodsmen/hunters. I mean some wheel shooters looks like they are carrying a contraption in the woods that looks like they are going to take on the klenonns (however you spell it from star trek). They got the tinyest peep sites, the smallest target pins, just not huntworthy bow.
I admit I know this for a reason. I love to long range shoot, but love more tinkering with my rifles. Building up loads. I spend 5X more tinkering than I do actually picking a load and practicing. I notice many target shooters can't leave thier equipment alone. Non-stop tinkering. Trad shooters including. Changing arrows, bh's, changing releases. I understand it and respect it.
I am not saying all target shooters, or most, just from what I have seen, target and hunting are two totally different skills. I talked to Byron Fergonson at the Baltimore trad classic. I asked him if he ever misses a deer. He looked me, grinned and nodded, "it happens".
Some folks get too crazy about targets, and others get wrapped up with hunting skills. A nice balance I believe can go far.