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Examining violence among Not Guilty by Reason of Insanity state hospital inpatients across multiple time points: the roles of criminogenic risk factors and psychiatric symptoms

  • Darci Delgado (a1), Sean M. Mitchell (a2) (a3), Robert D. Morgan (a3) and Faith Scanlon (a3)



Institutional violence in state hospitals is a public health problem that has been severely understudied. Given the personal (ie, staff and patients) and fiscal harms associated with institutional violence, more research into contributing factors for violence is needed. The overarching aim of this study then was to examine associations among psychiatric symptoms, criminal risk factors, and institutional violence.


Participants were 200 male, female, and transgender forensic mental health inpatients adjudicated Not Guilty by Reason of Insanity and committed to the California Department of State Hospitals. Participants completed a psychiatric symptom measure, and measures of and associated with criminal risk. Institutional violence was recorded from file review and includes physical violence toward staff or patients for 6-months prior to and post patient participation in this study.


After adjusting for previous institutional violence, results indicated that psychiatric symptoms were not associated with follow-up institutional violence; however, criminal risk was associated with follow-up institutional violence. Unexpectedly, 2 aspects of criminal risk, antisocial cognitions and associates, were not associated with follow-up institutional violence after adjusting for previous institutional violence. Results also provided a tentative cutoff score on the Self-Appraisal Questionnaire for predicting follow-up institutional violence.


These results have important implications for treating and managing patients at risk for institutional violence, including the need to assess criminogenic risk and leverage treatments that target these risk factors as a best practice approach.


Corresponding author

*Author for correspondence: Darci Delgado (Email:


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The findings and conclusions in “Examining violence among Not Guilty by Reason of Insanity state hospital inpatients across multiple time points: the roles of criminogenic risk factors and psychiatric symptoms,” are those of the authors and do not necessarily represent the views or opinions of the California Department of State Hospitals or the California Health and Human Services Agency.



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Examining violence among Not Guilty by Reason of Insanity state hospital inpatients across multiple time points: the roles of criminogenic risk factors and psychiatric symptoms

  • Darci Delgado (a1), Sean M. Mitchell (a2) (a3), Robert D. Morgan (a3) and Faith Scanlon (a3)


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