Is there a term for the habit of talking to oneself?

Factual Questions
1

Some people (I admit I’m one of them) occasionally let their inner voice come out and talk to themselves. In my case, without thinking about it, I will start to move my lips or whisper, or even articulate as though having a dialogue - embarassing if a stranger happens to overhear you.

Does this habit have a name? Is there a theory as to why this might happen?

Thanks.

2

Soliloquise?

3

I say to myself, “Self, this topic has come up before, hasn’t it? By gum, it has, Self!” See this thread where I quoted from this abstract from Psychology

4

[QUOTE=flyby]
Some people (I admit I’m one of them) occasionally let their inner voice come out and talk to themselves. In my case, without thinking about it, I will start to move my lips or whisper, or even articulate as though having a dialogue - embarassing if a stranger happens to overhear you.

Does this habit have a name? Is there a theory as to why this might happen?

Thanks.
[/QUOTE]

Surely we should all be on speaking terms with ourselves.