Yes, so does my brother who has PDDNOS and my sons.
Maybe it's just a human thing but I know for me I do it for reassurance and making sure I can get my face to match my feelings as seen in tv shows and such..as I have a complex about that.
Not only others but my mom also yelled at me regularly, thinking my face was saying something else and my words something else that didn't match my facial expression which was too 'flat' according to her (she said this about my voice too) ..
(she thought i was being sarcastic or mocking)..
Watched Silent films specifically for this - as well as the siilent part since it was during having a baby --
because they were meant to exaggerate expressions and tell the story more from that, than the dialogue.
Reassurance comes from the practice in the mirror because I feel disconnected from myself (disoriented) mostly and seeing myself sort of reassures me that I am still me. Disoriented is like.. feeling so wrapped up in sensory things around u--
that you get a floaty lightheaded feeling, as though you are an awareness of the things around you, only and therefore have no idea what u yourself are thinking or feeling or supposed to be doing - in the moment.
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Take defeat as an urge to greater effort.
-Napoleon Hill