I don't think the information we have about Sam fits the sociopath model at all.
Consider the following check list:
1. GLIB and SUPERFICIAL CHARM -- the tendency to be smooth, engaging, charming, slick, and verbally facile. Sociopathic charm is not in the least shy, self-conscious, or afraid to say anything. A sociopath never gets tongue-tied. They have freed themselves from the social conventions about taking turns in talking, for example.
By all accounts he was shy, not outgoing, and certainly not someone that managed or controlled conversations.
2. GRANDIOSE SELF-WORTH -- a grossly inflated view of one's abilities and self-worth, self-assured, opinionated, cocky, a braggart. Sociopaths are arrogant people who believe they are superior human beings.
No information on this point I am aware of.
3. NEED FOR STIMULATION or PRONENESS TO BOREDOM -- an excessive need for novel, thrilling, and exciting stimulation; taking chances and doing things that are risky. Sociopaths often have low self-discipline in carrying tasks through to completion because they get bored easily. They fail to work at the same job for any length of time, for example, or to finish tasks that they consider dull or routine.
No. He worked on websites and finished what he started. A lot of this sort of work is tedious and tweaky requiring concentration on minor details of artwork or layout. No skydiving or car racing or other thrill seeking behaviors that I am aware of.
4. PATHOLOGICAL LYING -- can be moderate or high; in moderate form, they will be shrewd, crafty, cunning, sly, and clever; in extreme form, they will be deceptive, deceitful, underhanded, unscrupulous, manipulative, and dishonest.
No reports of this.
5. CONNING AND MANIPULATIVENESS- the use of deceit and deception to cheat, con, or defraud others for personal gain; distinguished from Item #4 in the degree to which exploitation and callous ruthlessness is present, as reflected in a lack of concern for the feelings and suffering of one's victims.
No reports of this.
6. LACK OF REMORSE OR GUILT -- a lack of feelings or concern for the losses, pain, and suffering of victims; a tendency to be unconcerned, dispassionate, coldhearted, and un empathic. This item is usually demonstrated by a disdain for one's victims.
Seems possible especially given the brutality of the murders, but he did call his family and other people after commiting the murders which might be a sign of some remorse. Unknown.
7. SHALLOW AFFECT -- emotional poverty or a limited range or depth of feelings; interpersonal coldness in spite of signs of open gregariousness.
Possibly demonstrated in his calm demeanor after the murders and after being arrested as well as his reference to Jesus making him do it. I'll call this one a yes.
8. CALLOUSNESS and LACK OF EMPATHY -- a lack of feelings toward people in general; cold, contemptuous, inconsiderate, and tactless.
No evidence of a more widespread pattern here, but then he did kill four people with a blunt instrument.
9. PARASITIC LIFESTYLE -- an intentional, manipulative, selfish, and exploitative financial dependence on others as reflected in a lack of motivation, low self-discipline, and inability to begin or complete responsibilities.
He lived with his parents, but no real evidence of this that I've heard of. So I'd say this one is a no.
10. POOR BEHAVIORAL CONTROLS -- expressions of irritability, annoyance, impatience, threats, aggression, and verbal abuse; inadequate control of anger and temper; acting hastily.
No reports of this.
11. PROMISCUOUS SEXUAL BEHAVIOR -- a variety of brief, superficial relations, numerous affairs, and an indiscriminate selection of sexual partners; the maintenance of several relationships at the same time; a history of attempts to sexually coerce others into sexual activity or taking great pride at discussing sexual exploits or conquests.
Nope.
12. EARLY BEHAVIOR PROBLEMS -- a variety of behaviors prior to age 13, including lying, theft, cheating, vandalism, bullying, sexual activity, fire-setting, glue-sniffing, alcohol use, and running away from home.
Unknown, but no reports of this sort of thing so far.
13. LACK OF REALISTIC, LONG-TERM GOALS -- an inability or persistent failure to develop and execute long-term plans and goals; a nomadic existence, aimless, lacking direction in life.
Possibly true, but his sister says that he only recently decided to start contributing to the horrorcore genre. Seems like a reach to me.
14. IMPULSIVITY -- the occurrence of behaviors that are unpremeditated and lack reflection or planning; inability to resist temptation, frustrations, and urges; a lack of deliberation without considering the consequences; foolhardy, rash, unpredictable, erratic, and reckless.
Seems that he waited for the girls to be asleep before murdering them. That's premeditation IMO.
15. IRRESPONSIBILITY -- repeated failure to fulfill or honor obligations and commitments; such as not paying bills, defaulting on loans, performing sloppy work, being absent or late to work, failing to honor contractual agreements.
No evidence of this.
16. FAILURE TO ACCEPT RESPONSIBILITY FOR OWN ACTIONS -- a failure to accept responsibility for one's actions reflected in low conscientiousness, an absence of dutifulness, antagonistic manipulation, denial of responsibility, and an effort to manipulate others through this denial.
He blamed the murders on Jesus, so yes.
17. MANY SHORT-TERM MARITAL RELATIONSHIPS -- a lack of commitment to a long-term relationship reflected in inconsistent, undependable, and unreliable commitments in life, including marital.
Not true from what I've read about him.
18. JUVENILE DELINQUENCY -- behavior problems between the ages of 13-18; mostly behaviors that are crimes or clearly involve aspects of antagonism, exploitation, aggression, manipulation, or a callous, ruthless tough-mindedness.
Nothing like this reported.
19. REVOCATION OF CONDITION RELEASE -- a revocation of probation or other conditional release due to technical violations, such as carelessness, low deliberation, or failing to appear.
N/A he had no prior criminal record.
20. CRIMINAL VERSATILITY -- a diversity of types of criminal offenses, regardless if the person has been arrested or convicted for them; taking great pride at getting away with crimes.
No. He had no previous criminal record.