I saw a preview for an Oprah Winfrey show many months ago which focused on kids who had this difficulty. A specialist in this area who had also written books dealing with this behavior pattern was to be a guest. Small group classes which taught kids these skills were going to be shown. I suggest you and I try to contact Ms. Winfrey's production staff and request a transcript of that show; maybe they would also send you a tape if you explained your situation. I'm going to call our local TV affiliate station that broadcasts Oprah and try to get her Chicago number that way. You do the same. I know this set of behaviors is not widely discussed in psychological circles. This may not be directly applicable to your son but I have a hunch it is. E-mail me when you get an answer; I'll do the same. Good luck.
FLASH!!! Before I sent this back to you but after I wrote the aforementioned, I was able to find out the specific Oprah show and how you can order a complete transcript. Telephone Burrell Transcripts at 1-800-777-TEXT and ask for a copy of the October 15, 1996 show on children who had difficulty picking up on social cues; it will cost you $7 for the transcript and P&H. Good luck and let me know what happens.