Sadistic personality disorder and psychopathy are strongly correlated with violent behavior.

KEITH HERSH, BERNADETTE GRAY-LITTLE. Psychopathic Traits and Attitudes Associated With Self-Reported Sexual Aggression in College Men. 1998. https://doi.org/10.1177/088626098013004003

This paper demonstrates that psychopathic personality traits are associated with self-reported sexual aggression in men.

WC Myers, L Monaco. Anger Experience, Styles of Anger Expression, Sadistic Personality Disorder, and Psychopathy in Juvenile Sexual Homicide Offenders. 2000. https://doi.org/10.1520/jfs14753j

This study evaluates juvenile offenders and links sadistic personality and psychopathy to violent forensic outcomes.

Amy M. Hoffmann, Edelyn Verona. Psychopathic Traits and Sexual Coercion Against Relationship Partners in Men and Women. 2018. https://doi.org/10.1177/0886260518754873

This research connects psychopathic trait facets to sexual coercion and intimate partner violence perpetration.

Lobbestael J, Slaoui G, Gollwitzer M. Sadism and Personality Disorders.. 2023. https://doi.org/10.1007/s11920-023-01466-0

This review highlights that sadism is most strongly related to increased psychopathic traits and harmful interpersonal behaviors.

Lassche MM, Lasogga L, de Roos MS, Leeflang A, Ajazi V, Axioti M, Rassin E, van Dongen JDM. Dark Tetrad personality traits, paraphilic interests, and the role of impulsivity: an EEG-study using a Go/No-Go paradigm.. 2024. https://doi.org/10.1038/s41598-024-61214-z

This study indicates that psychopathy and sadism are positively associated with paraphilic interests and related behaviors.