TY Mrs. GN - what an informative and interesting video. I did some more sleuthing on Dr. Hare's psychopathy checklist. Of course this is to be used in conjuction with a semi-structured interview done with a qualified clinician. I have found a link with the checklist and scoring references. By no means do I wish to devalue this tool's worth in the clinical setting. I think this tool helps explain to us what we actually have been witnessing as we follow this case.
http://www.minddisorders.com/Flu-Inv/Hare-Psychopathy-Checklist.html
snipped for space by me
"The Hare PCL-R contains two parts, a semi-structured interview and a review of the subject's file records and history. During the evaluation, the clinician scores 20 items that measure central elements of the psychopathic character. The items cover the nature of the subject's interpersonal relationships; his or her affective or emotional involvement; responses to other people and to situations; evidence of social deviance; and lifestyle. The material thus covers two key aspects that help define the psychopath: selfish and unfeeling victimization of other people, and an unstable and antisocial lifestyle.
The twenty traits assessed by the PCL-R score are:
glib and superficial charm
grandiose (exaggeratedly high) estimation of self
need for stimulation
pathological lying
cunning and manipulativeness
lack of remorse or guilt
shallow affect (superficial emotional responsiveness)
callousness and lack of empathy
parasitic lifestyle
poor behavioral controls
sexual promiscuity
early behavior problems
lack of realistic long-term goals
impulsivity
irresponsibility
failure to accept responsibility for own actions
many short-term marital relationships
juvenile delinquency
revocation of conditional release
criminal versatility
When properly completed by a qualified professional, the PCL-R provides a total score that indicates how closely the test subject matches the "perfect" score that a classic or prototypical psychopath would rate. Each of the twenty items is given a score of 0, 1, or 2 based on how well it applies to the subject being tested. A prototypical psychopath would receive a maximum score of 40, while someone with absolutely no psychopathic traits or tendencies would receive a score of zero. A score of 30 or above qualifies a person for a diagnosis of psychopathy. People with no criminal backgrounds normally score around 5. Many non-psychopathic criminal offenders score around 22. "