Does anyone know the theory of James about the I and the Me.
It seems closely related to your first and second function.
The second function, as wikisocion says, is used to make contact with other people. So is the Me-self.
The first function is the accepting function, that just accepts information, similar to the I-self.
It's quite easy to experiment with this in your mind. example: Accepting subtypes seem to be talking to themselves and let others listen along. That is the same thing that I experience when only using my I self and trying to say something. What do you guys think, could there be a connection?