My husband applied to a local sheriff department. Part of that process includes psyche screening. During one of the interviews the difference between psychopath and sociopath came up. I think it was during his lie detector test. The person giving him the test said he's interviewed psychopaths and sociopaths, and of the two sociopaths are worse. According to him, psychopaths know what they are doing is wrong, but can't help it. Sociopaths apparently don't believe what they are doing is wrong, and have absolutely no remorse. During a lie detector test, the psychopath will give "hits", while the sociopath doesn't. For example, the question, "Would you have any problem killing a person?" When the psychopath answers, there will be a hit on their results. The sociopath can look the interviewer dead in the eyes and say, "I have no problem killing a person." and their results will have no hits, nothing indicating a lie. I don't know how effective lie detector tests are (I know there's been debate), but regardless that's something to think about.