I'm not here playing scientist trying to come up with typical/atypical variations. I study criminal behavior. I observe criminal behavior. I work with criminal mentalities. I think like a cop. Short, sweet, simple. There will always be an "interesting" case that goes against known variables (note, I did say this isn't 100%), however, in plain everyday English...most criminals behave the same way consistently and have anticipated reactions. They also tell on themselves if you know what to look for. Beyond that, what you are attempting to get into would require several years and multiple experts to even begin debating the issue.