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In Arizona, polygraph test results are generally inadmissible in court due to questions regarding their scientific reliability
. However, they may be admissible if both the prosecution and defense enter a written stipulation (agreement) to allow the results, as established in State v. Valdez. Without this agreement, they are rarely admitted.
Washington and Lee University +4
Key Aspects of Polygraph Admissibility in Arizona:
In Arizona, polygraph test results are generally inadmissible in court due to questions regarding their scientific reliability
. However, they may be admissible if both the prosecution and defense enter a written stipulation (agreement) to allow the results, as established in State v. Valdez. Without this agreement, they are rarely admitted.
Washington and Lee University +4
Key Aspects of Polygraph Admissibility in Arizona:
- Stipulation Rule: Evidence is only admissible if both parties agree to it beforehand.
- Voluntary Tests: Even if an individual passes a polygraph voluntarily, the results are typically inadmissible in court.
- Investigative Use: Law enforcement often uses polygraphs during investigations to gauge credibility or encourage confessions, particularly in sex crime cases.
- Probation/Parole: Polygraphs are sometimes used as a condition of probation or parole, though these results are also generally inadmissible for new criminal charges.
- Refusal: Refusing to take a polygraph cannot be used against a defendant in court.
Washington and Lee University +4