Which statement regarding polygraph testing of sexual assault victims is correct?

• A. It is mandatory for all victims
• B. It is the preferred method of evaluating credibility
• C. A victim should never be subjected to a polygraph
• D. It should only be done after a trial

Answer: (C)

The key idea is that polygraph testing on sexual assault victims is inappropriate and unreliable as a credibility measure. Polygraphs detect physiological arousal, not truthfulness, and a survivor’s responses can be strongly influenced by trauma, fear, pain, and stress from the assault and the investigative process. This makes the results scientifically and ethically problematic, often leading to misinterpretation and re-traumatization. Because of these concerns, investigators generally avoid polygraphs with victims and instead rely on corroborating evidence, careful interviews, and other investigative avenues. In practice, polygraphs are more appropriately used with suspects in some cases, not with victims, and their results are not typically admissible in court. This aligns with the principle that a victim should not be subjected to a polygraph. The other statements imply mandatory use, preference, or post-trial use, which do not reflect standard practice or policy.