Barn cats vs house cats
by Lauren Lagoni
I would have to say barn cats seem to be more friendly towards strangers or new additions to a family. I have lived on a barn for most of my life, and all the cats that I have owned were nicer or more friendly than the cats I have met at my friends or family's houses. But this doesn't go for all barn or house cats. Depending on the cat and the type of enviroment, along with the type family, will affect the cats attitude towards people/family/friends.
But yes letting your cat outside, supervised or not can affect your cats attitude.