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Appendix 15. Offenders: Serial Offending and Prior Bad Acts. Serial Rape by Undetected Rapists. 63% had committed other rapes 483 total rapes/attempted rapes average of 4 rapes per rapist. 1,882 men assessed: 120 rapists. Serial Offending by Undetected Rapists.

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appendix 15

Appendix 15

Offenders: Serial Offending and Prior Bad Acts

serial rape by undetected rapists
Serial Rape by Undetected Rapists
  • 63% had committed other rapes
  • 483 total rapes/attempted rapes
  • average of 4 rapes per rapist

1,882 men assessed: 120 rapists

serial offending by undetected rapists
Serial Offending by Undetected Rapists
  • 14% other forms of sexual assault
  • 17.5% sexual abuse of children
  • 10.8% physical abuse of children
  • 38.3% battery of adult partner

58% of rapists were serial offenders

serial offending by undetected rapists1
Serial Offending by Undetected Rapists
  • 483 rapes and attempted rapes
  • 17 other sexual assaults
  • 319 acts of sexual abuse against children
  • 95 acts of physical abuse against children
  • 275 acts of battery against adult partners
  • Total = 1,225 offenses
slide5

Serial Rapists

76 men

Single-act Rapists

439 rapes & attempted rapes

44 men

44 rapes & attempted rapes

Non Rapists1762 men

violence committed by serial rapists
Violence Committed by Serial Rapists

The 76 Serial Rapists Committed:

  • 439 rapes/attempted rapes
  • 49 sexual assaults
  • 214 acts of battery of partners
  • 66 acts of physical abuse of children
  • 277 acts of sexual abuse of children
  • 1045 total acts of violence
serial rape by incarcerated rapists
Serial Rape by Incarcerated Rapists

Abel et. al., 1987

126 rapists committed 907 rapes against 882 victims

Weinrott & Saylor (1991)

37 rapists charged with 66 rapes later admitted to 433 rapes

detecting multiple offending
Detecting Multiple Offending

Chambers (1994): 36 adolescent sex offenders

In treatment: revealed 111 victims

Threatened with polygraph: 188 victims

Under polygraph: 207 victims

the undetected rapist
The “Undetected” Rapist

Special Considerations in Investigations

  • Have a smooth interpersonal style
  • Be psychologically sophisticated
  • Quickly shift focus to behavior of victimto undermine her credibility & lay foundation of “consent defense”

Offender is likely to:

the undetected rapist1
The “Undetected” Rapist

Special Considerations in Investigations

  • Can “he said-she said” problem be solved?
  • Remember: majority are serial offenders
  • Investigate offender’s social networks
  • Interview old girlfriends & dates
  • Check for prior complaints/restraining orders

Possible Avenues of Investigation