A new study has found a significant increase in the number of mass shooters who attempt or commit suicide during their attacks, highlighting the troubling connection between such violent acts and suicidal tendencies. The study, which examined data from 1980 to 2019, revealed that the proportion of mass shooters attempting suicide during their crimes has nearly doubled over the past two decades.
The research, published in the journal Archives of Suicide Research, analysed 528 cases of mass shootings in the US. Their findings reveal a stark difference between the earlier period (1980–1999) and the more recent years (2000–2019), with suicide attempts rising from 23.2% to 40.5%. This increase aligns with a broader rise in mass shooting incidents worldwide, which surged by 400% in the same period.
The findings show that nearly one-third of all mass shootings involve a suicide or suicide attempt by the perpetrator. However, the reasons behind this link between mass shootings and suicide remain unclear. What the study does suggest is that the mental health of these individuals plays a complex role in these tragic events.
While 38.9% of shooters who attempted suicide had a history of non-psychotic psychiatric or neurological conditions, 44% had no known mental health issues at the time of the attack. This suggests that the role of mental illness in mass shootings may be more nuanced than previously believed. Many perpetrators had no record of conditions like depression or substance abuse, traditionally associated with both suicide and violent outbursts.
Even so, the study found that among those with known psychiatric conditions, depressive disorders were present in over 40% of cases. This raises questions about how many of these conditions go undiagnosed or unrecorded, leaving a gap in understanding the true mental state of mass shooters.
The study delves into the intricate relationship between aggression and suicidal behavior and makes the case that intense emotional or mental stress may be the cause of these violent outbursts. Previous research on homicide-suicide cases has indicated that depression, past suicide attempts, and life stressors are common antecedents to violent acts, findings that are echoed in the present study.
Interestingly, the research also highlights that only 16.6% of the mass shooters who attempted suicide had a history of substance or alcohol misuse, compared with 33.1% of those who did not. This contradicts the common belief that substance abuse plays a central role in driving both mass shootings and suicides, suggesting instead that underlying psychiatric issues may be the greater contributing factor.
The researchers suggest that psychological autopsies could provide more detailed insights into the role of psychiatric illness in mass shootings. A deeper understanding of the emotional and psychological factors driving these perpetrators could help inform prevention strategies. One potential approach could involve identifying individuals at high risk of both suicide and violence, potentially allowing for early intervention.
