Sexual sadism: avoiding its misuse in sexually violent predator evaluations

Area of Science:

• Psychiatry
• Forensic Psychology
• Clinical Psychology

Background:

• The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) rejected the proposal for coercive paraphilia as an official diagnosis.
• This decision reaffirms that rape is a crime, not a mental disorder, discouraging inappropriate diagnoses for legal purposes.
• The rejection of 'paraphilia, NOS, nonconsent' has led to concerns about overdiagnosis of sexual sadism in sexually violent predator (SVP) evaluations.

Purpose of the Study:

• To review research on sexual sadism and its diagnostic criteria.
• To clarify the distinction between rape and sexual sadism.
• To present a diagnostic process for sexual sadism to prevent misapplication.

Main Methods:

• Review of research on sexual sadism.
• Annotation of sexual sadism definitions in DSM and ICD-10.
• Proposal of a two-step diagnostic decision process.

Main Results:

• Rape and sexual sadism share violence and indifference to victim suffering but differ in motivation.
• Rapists use violence for cooperation or aggression; sexual sadists require violence/humiliation for arousal.
• Only a small fraction of rapists meet criteria for sexual sadism.

Conclusions:

• The DSM-5's rejection of coercive paraphilia is appropriate, reinforcing rape as a crime.
• Accurate diagnosis of sexual sadism is crucial to avoid misapplication in SVP evaluations.
• Understanding the motivational differences is key to differentiating rape from sexual sadism.