I agree, jojomonkey; thanks for the perceptive post.
I have ADHD and some compulsive traits, and I recognize just enough of myself in these tapes to feel an uncomfortable sort of empathy. I realize that posting anything more sympathetic than "she's the purest evil hell ever spawned" will lead to charges of defending or excusing her, which I'm not. But the fiddling, doodling, changing positions, putting her head down, sitting on the floor then on the chair again, pulling her knees up to her chest, playing with her hair, examining every item in the room, picking apart food, and going on self-referential tangents every time she speaks? Take away my Adderall and I look just like her.
If you locked me in a room with no reading material on a day when I had not taken my medication, I am not sure that I would have acted any less eccentric. And when someone finally came, I have no doubt that asking for a sweater or blanket is the first thing I would have done, because cold is distracting and I wouldn't have the foresight or impulse control to think about anything other than attending to this immediate stimulus, grief-stricken or not.
I agree that the evidence against Ms. Arias is damning and that nothing justifies her crime. I disagree that her mannerisms in the videos are diagnostic of psychopathy, narcissism, or some other cold-blooded-killer-ism, given that they are indistinguishable from (my own experiences and observations of) poorly managed ADHD.
I've never murdered anyone and don't intend to, for the record.