I believe that everyone exhibits natural behavior that is "aimed" at a dual; behavior that is accepted by a dual. The more sympathetic a person is, the more they will respond as that dual, if at all possible.
When I'm around an EII, I become more LSE-like. When I was chasing an IEI, I definitely became more SLE-like, because that was the behavior that was rewarded. Ultimately, though, I just "could not be who she wanted me to be." -and a tip o' the hat to Mr. Bob Dylan for that line.