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Who Does School Shootings? Psychopaths, Not People with Asperger’s Syndrome

Wikimedia commons Fabrice Florin from Mill Valley, USA - Tam High Vigil for Parkland School ShootingWhen school shootings take place, especially after Newtown, Asperger’s Syndrome is often suspected. Both the Florida Sun-Sentinel and the New York Times reported comments that Parkland shooting suspect Nikolas Cruz was diagnosed with autism. It’s important to make this clear — research has shown that people with Asperger’s Syndrome (AS) are no more violent than the general population. In fact, they’re much more likely to be the victims of bullying and violence.

People can mistake the lack of social skills and social withdrawal of young adults with AS for hostility. Their withdrawal has little to do with hostility and often has much more to do with anxiety. An Asperger’s student may say something inappropriate if bullied beyond his or her tolerance, but that student is unlikely to act in a violent way. I have unfortunately seen students with AS expelled or indefinitely removed from the mainstream for such statements.

People with AS can have coexisting psychiatric problems, most commonly ADHD, depression and anxiety disorders. Other coexisting conditions are certainly possible.

So who does school shootings? The people who kill groups of innocent people (outside military actions) are those who have no regard for other people, no capacity for empathy or remorse. The popular term for this is psychopath; the psychiatric term is antisocial personality disorder.

Tony Farrenkopf, a forensic psychologist, studied the profiles of mass shooters. He found that killers often exhibit risk factors that are usually linked to criminal behavior: a history of problematic parenting, a tendency to set fires or hurt animals, a sadistic streak, self-centeredness and a lack of compassion. Other common symptoms include a fascination with guns and violence and rule breaking.

According to the New York Times, Cruz’s adoptive mother, Lynda Cruz, told investigators from the Florida’s Department of Children and Families that her son had been diagnosed with autism and attention deficit hyperactivity disorder. He was being treated for depression, had a behavioral disorder and had been taking medication for the ADHD, the report said. I can’t speak to the accuracy of these diagnoses. However, other behaviors reported by multiple media — bragging about killing animals, social media posts of dead animals and comments about school shootings — are not typical of depression, autism or ADHD. They suggest antisocial personality disorder. Other students say it was “common knowledge” that he was capable of a school shooting.

Research has shown that people with antisocial personality disorder have little or no anxiety, unlike those with an autism spectrum disorder. There are studies pointing to the contribution of biological factors to antisocial personality disorder; research has shown that “psychopaths” lack the proper neurological frameworks to develop a sense of ethics and morality. For example, people with this disorder, unlike the mainstream population, do not respond to classical conditioning. If a “normal” person hears a bell and is given an electric shock, he will experience anxiety and his body’s autonomic nervous system will show changes at the sound of the bell. An individual with an antisocial personality has no reaction; he does not have the underlying capacity of fear or anxiety. It is important to recognize that not all people with antisocial personality disorders commit mass shootings. Even if there was a biological marker, this would not predict future behavior.

In a 2016 article title “Treatment for Antisocial Personality Disorder, Donald Black, MD, suggests that therapy is difficult. According to Black, “People with antisocial personality tend to blame others, have a low tolerance for frustration, are impulsive and rarely form trusting relationships. People with ASP often lack the motivation to improve and are notoriously poor self-observers. They simply do not see themselves as others do.” There is no evidence of medication as a solution, and what research there is on therapeutic communities has been done in prisons and points to limited effectiveness.

Cruz had posted a video of cutting himself after the breakup of a relationship, and a mobile crisis team had been called out to see if he needed to be committed to psychiatric hospitalization under the Florida Baker Act, which allows such involuntary hospitalization of someone at risk of harming himself or others. The team found he was not eligible for hospitalization. According to a New York Times report, the Florida Department of Children and Families investigated Cruz in 2016; they closed the case about two months later. The agency determined that the “final level of risk is low” for hurting himself or others because his mother was caring for him, he was enrolled in school and he was receiving counseling. At the time of the shooting, he had lost his mother but had a job. It is unclear if he was still seeing a counselor.

Cruz was a complex young man, undoubtedly suffering from multiple disorders, according to reports. However, the evidence of the effectiveness of therapy for his antisocial personality disorder suggests that it is questionable that counseling for it would have been ineffective. Despite all the calls for necessary changes to the mental health system so more treatment is readily available, which is sorely needed, another answer would have been necessary for Cruz’s threat to society. People with Asperger’s, ADHD and depression who do not have coexisting antisocial personality traits do not shoot people.

There is no “silver bullet” or easy answer to a threat like Cruz. We have to refrain from responding to this issue as though there is only one solution (mental health). Above all else, this is a public health issue that must be discussed and not dismissed.

Who Does School Shootings? Psychopaths, Not People with Asperger’s Syndrome

Marcia Eckerd, PhD

Dr. Marcia Eckerd has been in practice as a licensed psychologist since 1985. She has been appointed by the State Legislature of CT as one of two treating clinicians to serve on the Autism Spectrum Disorder Advisory Council, and she is on the Clinical Advisory Committee of the Aspergers and Autism Association of New England. She helped establish the Yale-Norwalk Hospital collaboration Pediatric Development and Therapy Center and is on the professional advisory board of Smart Kids with LD as well as the voluntary faculty in Psychiatry at Norwalk Hospital. She is in private practice providing therapy, consultations, neuropsychological evaluations, and social coaching.

Dr. Eckerd graduated from Yale University, BA magna cum laude and City University, Ph.D. in Clinical Psychology. Her internship and fellowship were at New York-Presbyterian Hospital, White Plains, NY. She trained in neuropsychological assessment with Dr. Melvin Crosby at the Child Guidance Clinic of Stamford, and trained individually in mindfulness work at the Benson-Henry Institute, Mass General Hospital.

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APA Reference
Eckerd, M. (2018). Who Does School Shootings? Psychopaths, Not People with Asperger’s Syndrome. Psych Central. Retrieved on September 29, 2020, from
Scientifically Reviewed
Last updated: 8 Jul 2018 (Originally: 20 Feb 2018)
Last reviewed: By a member of our scientific advisory board on 8 Jul 2018
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