yes it does.. I know for a fact that if I got hit in the face every time I was in trouble, I would flinch when somone went near my head.. I know that the same thing goes for a dog.. if you hit a dog in the face it will eventually turn on you if it is done allt he time.. if a dog has been hit in the face alot and then a child comes up to it to pet it on the head, it will be affraid and might lash out.. give me one tiny bit of proff that makes sence as to why a dog wouldent be affraid after being hit in the face!!!