I'm not sure a child abuser or terrorist is necessarily a sociopath; I'm not really knowledgeable enough to form an opinion.
I think part of the confusion is that while most people here are discussing broadly the pros and cons of torture, I carved out a small niche to argue that while torture as a policy for, say, the military, may not be viable due to uncertainty of results (and other things), torture DOES/WOULD work on certain individuals. I may be getting swept up into the group of those who are not 'anti-torture' since I've staked a position somewhere between them and those who say 'torture never works and should never be used'.