AS little as it can help, without knowing the person well enough and without the necessary training, yes, why not. It would be very interesting.
"Sociopath" is no longer a term we use as clinicians, the disorder was redefined years ago and is now called Antisocial Personality Disorder. Personality disorders tend to be stable (meaning unchanging) lifetime patterns that are resistant to treatment; this is why most insurance companies will not pay for treatment if the primary diagnosis is a personality disorder (what we used to call an Axis II diagnosis). There is significant overlap between Antisocial Personality Disorder and Narcissistic Personality Disorder.
To meet the criteria for ASPD, one must also meet the criteria for Conduct Disorder prior to age 18 - typically, this also means a diagnosis of ADHD in childhood due to the impulsivity, but not always.
Here are the DSM-5 criteria for Antisocial Personality Disorder:
A. Disregard for and violation of others rights since age 15, as indicated by one of the seven sub features:
- Failure to obey laws and norms by engaging in behavior which results in criminal arrest, or would warrant criminal arrest
- Lying, deception, and manipulation, for profit or self-amusement,
- Impulsive behavior
- Irritability and aggression, manifested as frequently assaults others, or engages in fighting
- Blatantly disregards safety of self and others,
- A pattern of irresponsibility and
- Lack of remorse for actions (American Psychiatric Association, 2013)
The other diagnostic Criterion are:
B. The person is at least age 18,
C. Conduct disorder was present by history before age 15
D. and the antisocial behavior does not occur in the context of schizophrenia or bipolar disorder (American Psychiatric Association, 2013)
By comparison, here is Narcissistic Personality Disorder:
The definition of NPD states that it comprises of a persistent manner of grandiosity, a continuous desire for admiration, along with a lack of empathy. It starts by early adulthood and occurs in a range of situations, as signified by the existence of any 5 of the next 9 standards (American Psychiatric Association, 2013):
- A grandiose logic of self-importance
- A fixation with fantasies of infinite success, control, brilliance, beauty, or idyllic love
- A credence that he or she is extraordinary and exceptional and can only be understood by, or should connect with, other extraordinary or important people or institutions
- A desire for unwarranted admiration
- A sense of entitlement
- Interpersonally oppressive behavior
- No form of empathy
- Resentment of others or a conviction that others are resentful of him or her
- A display of egotistical and conceited behaviors or attitudes
Another model, characterizes NPD as having fair or superior impairment in personality functioning, apparent by characteristic troubles in at least 2 of the following 4 areas (American Psychiatric Association, 2013):
- Individuality
- Self-direction
- Empathy
- Closeness
No actual physical characteristics are seen with NPD, but patients may have concurrent substance abuse, which may be seen in the clinical examination.
We can, and do, quantify sociopathy, even if we no longer use the term "sociopath"