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Polygraph board defends strict standards and differentiates polygraph from voice-stress tests
Summary
The Alabama Polygraph Examiner's Board described rigorous licensing and internship requirements and cautioned that computerized voice stress analysis (CVSA) is a one‑week training that lacks the multi-channel sensors used in APA-standard polygraph exams.
Tim Spears, chair of the Alabama Polygraph Examiner's Board, outlined the board’s licensing pathway and training standards and explained why the board views full polygraph examinations as more robust than voice-stress technologies.
Spears said candidates must complete a six-month internship and "submit at least 10 polygraph examinations" from that internship for review. He emphasized the board follows American Polygraph Association standards using multiple physiological channels (breathing, cardio and sweat-gland activity) and described CVSA as "a 1 week training" that relies on a single channel (voice) and therefore lacks the multi-channel evidence the board requires.
Committee members asked whether polygraph results are used in court and how the board compares CVSA results to full polygraph tests; Spears said polygraph results can be entered into court by agreement of defense and prosecution and that the board reviews totality of data and recordings when evaluating exam quality.
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