I'm definitely a virgo asc with scorpio on the 3rd (my time of birth was one of the first things that my astrologer mother asked when she came round from the cesarean) and I have the same intelligences as you according to personality tests.
I came across your thread because I have been looking up Scorpio on the 3rd house on google, and also found the following:
Dana Gerhardt on
www.astro.com - " With Sagittarius on the 3rd house cusp, she suggests, an open, easy-going approach might invite communication from others; with Scorpio, reserved or biting and sarcastic speech might discourage easy back-and-forth exchange"
http://www.stariq.com/Main/Articles/P0001583.HTM - "with Scorpio on the cusp of the Third House of communications and perceptions, a fearful parent may have distorted your communication. She or he may have taught you how to use sarcasm to avoid direct expression of your feelings. You may have experienced fear that you would be punished for saying the wrong things. Scorpio's accountability may have been excessively harsh coming from a wounded parent or older sibling. So, you may not trust your own words. You do not communicate at your highest level of potential. You see so much that you are afraid to talk about."
and - "Where others see the obvious you see the hidden undercurrents. Your skills of observation may have been honed in a childhood where you were not encouraged to talk. So you watched and learned more than other children your age. Your words are not mere decorations, space filling or ear candy. You want to be heard as attentively as you listen. Communication is about change, about moving others to feel or see what has been hidden. Finding potency in the sounds, the silence and the nuance empowers your message. The depth of the connection is more important than facts. But, it is useful to remember that sometimes the simple truth is truly simple."
These are certainly true for me - a fearful/wounded parent who discouraged communication and was biting and sarcastic, leading me to be somewhat similar. On the other hand the powers of observation have got me out of dangerous situations while out and about in the neighbourhood, but then again perhaps it is Scorpio on the 3rd that brought me into contact with those negatively Scorpio types in my neighbourhood
I also read this:
http://www.astrologyclub.org/articles/planets_signs_houses/gemini/third.htm - "Fixed signs retain information for a long time. For example, a person who has Scorpio on the third house cusp with Moon also in that sign and house can remember everything and everyone who ever hurt his feelings and harbors resentment toward them. He talks from his emotions and wants to stir up yours as well. He prefers a heated discussion to superficial pleasantries."