Hi, I'm new here - long time lurker, first time poster. I am endlessly fascinated by cases like these. I was obsessed with the Scott Peterson case, and I guess you could say the 'why' of it - the psychology/pathology of sociopathic behavior. I think that Casey is clearly a sociopath, possibly also a borderline personality. I see these terms thrown around interchangeably with mental illness, and although I know that none of us have evaluated her ourselves and can actually "diagnose", I think we need some clarification of these terms, and also, I just wanted to open a psychology thread since I see some mention of "what is wrong with her?" in pretty much every thread. I do something needs to be clarified however - I know that there are a lot of co-occurring mental illnesses, but there is a HUGE difference between a mood disorder and a personality disorder. I myself am bi-polar. Mood disorders are disorders of the brain chemistry that one cannot control, it is a disease, often hereditary, and is treated with medication and therapy - recognizing your symptoms and learning your triggers. It takes YEARS of conscious work and effort to learn how to manage it. People with mood disorders are still moral, have consciences, care about other people, etc. But when you are in the grip of a manic episode, yes you will do things you wouldn't "normally" do, because you don't have the self-awareness to control it. It IS an illness. Schitzophrenia is a thought disorder - again, people that in their normal state of being without their brain circuitry going haywire, have delusions, paranoia and do/say things they wouldn't otherwise do. It is a torturously permanent condition, and not something that the person can usually control without medication. I have read comments that Casey is "mentally ill". While not a psychologist myself, I have studied psychology enough to say that this girl is most definitely NOT mentally ill. This girl is calculating, cunning, and IN CONTROL. If she were mentally ill, there would be other behaviors that would signal being unable to take care of herself. She has had the forethought and organization so far to be able to stick to her "story" at least! while she may not always have "answers" for all of her lies, I think her lies are at least somewhat consistent. To me, the stealing is more of an indication than the lying - she seems to do both equally with no shame or fear. I think she is a textbook sociopath and fully in control of herself. I don't know if it's that she CAN'T tell right from wrong, I think it's that she doesn't care. Personality disorders are NOT mental illnesses - they KNOW what they are doing and are in control of themselves.They just don't care. Sociopaths prey on the weak, and they are pretty much untreatable. It has been theorized that it CAN be caused by a child failing to "attach" to their caregiver - i.e. kids born in foster care, or with absentee parents. etc. (there are plenty of kids who are born into these situations that are NOT sociopaths). anyway, I've babbled long enough...here's your psychology thread...I'm curious as to what others experiences/knowledge is of this particular pathology.