(This is very long, so if you want to read it, grab some popcorn.)
Thanks so much for explaining, teach

I was not bored with it, it's an interesting topic. I don't think Goren can be a perfect example of a particular syndrome or disorder, because 1. He is not real, he is a fictional character, so the writers can create him to be anything 2. We do not know for sure whether Vincent or the writers chose Goren to have a particular disorder/other or if they created him to have a variety of symptoms that do not fit into one particular category or may not make sense in real life. Of course, the writers had to have studied and have their facts straight, but they could have made Goren have a variety of, but not all, symptoms, to create the character they wanted.
Goren is not the manipulative type as of a sociopath, he is just doing his job as a detective. He even said in Purgatory that he is allowed to lie to criminals. He doesn't lie or "con" anyone else other than them, he just wants to get the truth. I think sometimes he can just uses his power to get other people to do what he wants, but isn't conscience that it may hurt people (remember he was acting cheery with his mom in the hospital, just to get that picture of Mark?). He is overly careful in dealing with different people, and seems sort of like a robot, trying to figure how to please people or not make them angry like he is the psychologist and they are all his patients.
He seems perfectly fine in talking to Lewis or his other friends about favors or work to Eames and the Captain, but seems awkward when talking about personal things. He is careful in not revealing too much information about himself, so he doesn't and it makes him appear anti-social. I don't think he has much experience in dealing with other people rather than criminals, so because that is mostly his life, it is like he doesn't feel the need to deal with other people if it doesn't help with his job. When he does not know how to encounter a situation foreign to him, he may explode like in War at Home and just feel confused. That seems like a normal thing to do, though, I don't think everything he does means he has pyschological problems.
It's obvious that he has a lot of empathy, and even has contempt for those who have no shame or guilt, so you can cross that off the list. He is obviously not a narcissist, but he does seem to be a little self-absorbed. In the earlier seasons, it seemed like he was living in his own world, blocking everybody out and just being very distant except on certain occasions. He's grown since then, but still shows signs of it, like it's all underneath but he doesn't know it.
Underneath, Goren is an ethical person, and he may have ended up like his father or brother if he was not the moral person he is, and maybe because he didn't want to be like them, he wanted to be different. I think he has empathy for those with psychological problems because of his mother. He may not have been like that before, but it may have began when he started studying about schizophrenics like her. That may have lead him to study about more disorders and problems, and so it grew more and more as he learned more about it and had to deal with people with them.
There is a lot more to cover, but I still do not think he is a sociopath, not even borderline. Now I don't think he has autism or aspergers, either, maybe in the mildest form. He may show signs or symptoms of them, but a lot of his "problems" can be explained without having to be a disorder. He is quirky, but that doesn't mean he has OCD or anything (Monk defintely has OCD

.) I think the writers made him to be a complex and mysterious character that can't be explained perfectly in textbooks. It makes for great TV.
I'll have to read more about aspergers, autism OCD etc. I can get a better picture. Maybe teach can teach me

You'll have to be patient with me with all these psychological things, because I am not an expert on it.
By the way, I thought Wally's symptoms were exaggerated for the show, not exactly like in real life. Oh and the part you put about gifted students reminded me when Goren said, "actually my Biology teacher didn't think I was fun at all." Maybe he was a smart alek and he wasn't popular with his students. And maybe because he is so smart, people avoid him and so he doesn't socialize as much.
Thanks for reading.