Methuselah,
just to bolster your statement, the NAMI Family-to-Family course I took covered all kinds of anxiety, bipolar, depression, schizophrenia and schizoaffective mental illnesses, but not one word about psychopathy. I would agree, that there is a part of the brain or brain activity missing and it is absolutely impossible for them to feel remorse. It is not the same as mental illness.
However, not all Reactive Attachment Disorder (RAD) kids are psychopaths, Hoperemains. Just keep your eyes open and be aware. Knowledge is power.
