Which of the following is not a suspect identification method?

• A. Lie detector test
• B. Lineup
• C. Show up
• D. Photographic ID

Answer: (A)

Suspect identification relies on presenting potential suspects to a witness and seeing who best matches the memory of the offender. A lie detector test does not identify who committed a crime; it measures physiological responses to questions to assess truthfulness, not to link a person to the offense. While investigators may use polygraphs as a investigative tool to gauge credibility, they do not reveal a suspect’s identity. In contrast, lineups, show-ups, and photographic identifications are specifically used to pinpoint who among the presented individuals is the suspect, or matches the description given by witnesses. Lineups gather a group for comparison, a show-up presents a single person for quick recognition at the scene, and photographic identifications use photos for witness recognition.