>>314962338
Peer pressure and proteus effect may not even be entirely unrelated and are more than likely the same force, one from the group, and one from the assumed "avatar"(Irl this would be your role, or appearance) 
After all, your appearance matters to OTHERS and how you expect them to perceive you.

I would not feel good saying proteus and peer pressure are unrelated, and would not be surprised if they end up merged into one major concept.