Appendix K. Prosecuting Sexual Assault of Victims with Intellectual and Developmental Disabilities

Volume II: Performance Management

Appendix K. Prosecuting Sexual Assault of Victims with Intellectual and Developmental Disabilities

“Prosecutors should be aware that developmental disabilities manifest themselves on a variety of levels, depending on the severity of the disability as well as other factors. The term ‘developmental disability’refers to: a diverse group of severe chronic conditions that are due to mental and/or physical impairments. People with developmental disabilities have problems with major life activities such as language, mobility, learning, self-help, and independent living. Developmental disabilities begin any time during development up to 22 years of age and usually last throughout a person’s lifetime… [S]ome developmental disabilities … will not directly affect intellectual ability, but may cause challenges for the victim on the witness stand.”118

Checklist for Preparing and Trying Cases Involving Victims with Disabilities


✔ What is the disability and how may it impact the victimization?
  • Verbal communication
  • Physical maneuverability
  • Reliance on others for certain needs
  • Perceived or actual vulnerability
  • Victim’s perception of self
  • Victim’s ability to make a prompt complaint to anyone (g., based on communication limitations or limited access to a neutral or safe party)
  • Ability or decision to report
  • Professionals’ receipt of the report
  • Medical treatment
  • Access to victim advocates
  • Access to law enforcement and availability of specialized interview equipment
  • Access to forensic interviewer and availability of specialized interview equipment
  • Access to prosecutor
  • Access to courthouse
  • Ability of prosecutor or courtroom to meet victim’s needs
✔ Are there special considerations for ensuring the victim can communicate with others?
  • Use of communication aids
  • iPad, software, picture communicators, talk-talk devices, etc.
  • Use of interpreters
    • Two if victim uses sign language
    • Revoicer
  • Work with professionals who already work with victim
  • Work with family members who can communicate with victim
✔ Consider the victim’s disability when making charging decisions.
  • Did the offender target the victim due to her/his disability?
  • Specific crime against victim with disability
  • Does the disability impact the victim’s ability to consent (as an element of the crime)?
  • Aggravating factor in charging and/or sentencing
  • Stay-away order as condition of bail
  • Protective order issued, if one is available in the jurisdiction
✔ What pretrial motions should be filed to protect the victim during the criminal prosecution?
  • Advocate in room/next to victim
    • Confidential victim advocate
    • Support person from disability organization
    • Victim’s personal assistant
  • CCTV
  • Support dog
  • Rape shield
  • Motion to prevent victim submission to psychological examination
✔ Anticipate defense motions.
  • Challenging victim’s competence
  • Alleging taint
  • Seeking victim’s mental health records
  • Introducing victim’s “bad” character evidence under 404(a)
  • Piercing rape shield
✔ Prepare the victim.
  • Prosecutor must meet with victim and develop understanding of victim’s abilities
  • Explain process to the victim
  • Ask victim about his/her concerns
  • Take victim to the courtroom
  • Bring tissues, food, and water to court
  • Have item of comfort, such as blanket or teddy bear (not visible to jury)
  • Ensure victim has glasses or other items s/he needs
  • Ensure room temperature is comfortable for victim and/or have victim bring extra sweater
  • Consider the time of day of victim’s testimony and take breaks during testimony to accommodate victim’s eating, medication, or other schedule
  • Explain role of judge and jury
  • Explain role of prosecutor and questions victim will be asked
  • Explain role of defense attorney and questions victim will be asked
✔ Trial considerations.
  • Voir dire to determine whether the victim’s disabilities will affect the juror’s assessment of victim’s credibility
  • Do certain charges require expert testimony to prove?
  • What can laypersons testify to? 
✔ Consider the following when making sentencing recommendations.
  • Nature of and gravity of the crimes
  • Impact on the victim
  • Defendant’s reaction to verdict (acceptance, remorse, etc.)
  • Defendant’s criminal history
  • Defendant’s characteristics
  • Education
  • Employment history
  • Community support
  • Familial support
  • Victim impact statement
  • Restitution
✔ Identify experts in your community and/or develop them within the office.
  • Work with experts who represent the community members most at risk of sexual assault, both because of the actual vulnerabilities as well as the perception of their credibility – oftentimes inaccurate and exploited by the defense.
    • Expert can testify about victim’s mental and physical capabilities119
    • Lay witnesses can testify about victim’s abilities120

Trainings and Other Resources


  1. William Paul Deal & Viktoria Kristiansson, Victims and Witnesses with Developmental Disabilities and the Prosecution of Sexual Assault, 1(12) The Voice 1 (2007) (internal citations omitted). ↩
  2. See Commonwealth v. Thomson, 449 Pa. Super. 159 (1995); and Georgina Stobbs & Mark Rhys Kebbell, Jurors' Perception of Witnesses with Intellectual Disability and the Influence of Expert Evidence, 16 J. Applied Res. Intell. Disabilities 112 (2003). ↩
  3. See Weir v. Chao, 364 Pa.Super. 490 (1987). ↩