I found this blog written by a Dr. Kristina Randle. She has some interesting articles about this trial.
This article looks at Jodi and her personal diagnosis of Antisocial Personality Disorder (essentially, a sociopath). She didn't feel the narcissistic diagnosis completely fits Jodi, this is part of the explanation........
"There is no mention in the DSM-IV-TR, of them lying, deceiving, killing, being violent or aggressive"
If you skip to page 6 this is where she starts her analysis.....
Mental Health and Criminal Justice
This is her blog with many more articles, there's a tab labeled "Jodi Arias" at the top.....
Mental Health and Criminal Justice