Guide for Minimum Training Requirements for Examiners Conducting Psychophysiological Detection of Deception (PDD) Testing of Sex Offenders in Treatment, Probation or Other Similar Programs

Background & Context

ASTM E2163 established minimum training required for polygraph examiners engaged in psychophysiological detection of deception (PDD) examinations for individuals in treatment, probation or parole for sex offenses. This standard guide represented a critical effort to professionalize and standardize what had become one of the fastest-growing applications of polygraph testing in the United States.

Developed by ASTM Committee E52 on Forensic Psychophysiology, which was formed in 1996, the standard emerged during an era when post-conviction sex offender testing (PCSOT) was rapidly expanding as part of the "containment model" approach to managing sex offenders in the community. A significant portion of polygraph examinations conducted in the United States is done as part of a sexual offender containment program. The need for consistent, enforceable training standards became apparent as courts, treatment providers, and probation agencies increasingly relied on polygraph testing to monitor compliance and assess risk.

A U.S. district court decision in which a polygraph test was not allowed led to the formation of Committee E52, with the court stating that there were no controlling standards to ensure proper protocol. This judicial scrutiny highlighted the urgent need for consensus standards that could be cited across jurisdictions and withstand legal challenge.

Research Design & Methodology

ASTM E2163 was developed as a consensus standard rather than an empirical research study, representing agreement among polygraph professionals, researchers, and stakeholders about minimum competencies for PCSOT examiners. Committee E52 meets twice a year with about 25 members attending two days of technical meetings. The standard underwent rigorous review through ASTM's balloting process, ensuring input from diverse perspectives within forensic psychophysiology.

The guide was structured around minimum qualification thresholds that built upon foundational polygraph examiner training. Key requirements included:

• A minimum of 40 hours of specialized instruction, beyond the basic polygraph examiner training course requirements
• Twenty-four hours of polygraph training and sixteen hours of specialized training including behavior and motivation of sex offenders (12 hours) and trauma associated with victims/survivors of sexual assault (four hours)
• A final written examination in which the student must pass

The standard was originally published in 2001 (E2163-01) and was later revised (E2163-06) before being withdrawn in 2023. Its withdrawal reflects the evolving nature of ASTM standards and potential integration with updated professional association guidelines.

Results & Key Findings

The implementation of ASTM E2163 established a 40-hour specialized training minimum that became widely adopted as the industry standard for PCSOT examiner qualification. To engage in PCSOT, examiners must complete a minimum of 40 hours of specialized Post-Conviction Sex Offender Testing (PCSOT) training. This training framework became embedded in certification programs across the United States.

Key standardization outcomes included:

• Courses consisting of a minimum of 40 hours of specialized instruction approved by the APA became the norm for PCSOT certification
• Polygraph schools adhered to standards promulgated by the APA, AAPP and ASTM, creating consistency in training content
• PCSOT examiners must complete 30 hours of continuing education recognized by the APA every two years to maintain qualifications
• Examiners who have conducted fewer than 10 PCSOT exams conduct exams under supervision of an APA recognized PCSOT examiner until 10 exams have been completed

Specialized training emphasizes the unique demands of polygraph testing for sex offenders, including the different types of polygraph examinations (e.g., Instant Offense Tests, Sexual History Disclosure Exams, Maintenance Exams, and Sex Offense Monitoring Exams). The standardization effort helped distinguish PCSOT from general criminal polygraph testing, recognizing it as a distinct subspecialty requiring additional expertise.

Discussion & Significance

ASTM E2163 played a pivotal role in legitimizing PCSOT as a specialized forensic application with defined competency standards. While different polygraphy organizations may continue to maintain their own standards, ASTM standards are now often cited by organizations and are well known in the courts. The standard provided a neutral, consensus-based benchmark that transcended individual association politics and regional variations in practice.

The guide's significance extended beyond mere training hour requirements. Specialized training prepares examiners to work as part of a multidisciplinary team, collaborating with therapists, probation officers, and other professionals involved in the offender's treatment and supervision to provide comprehensive assessments of risk. This collaborative framework reflects the "containment model" philosophy that underlies modern sex offender management.

The standard also addressed critical ethical dimensions. Clinical PDD examinations refer to the employment of polygraph instrumentation for detecting deception or verifying truthfulness of individuals under court supervision or in treatment, specifically intended to assist in detection, treatment, or supervision of sex offenders, and should be regarded as a decision-support tool. This positioning helped clarify the appropriate role and limitations of polygraph testing in therapeutic and supervisory contexts.

Limitations & Considerations

As a minimum standard rather than best practice guideline, E2163 established a floor but not necessarily optimal training protocols. Although this Model Policy should be considered non-binding and not enforceable by the APA or any local jurisdiction, examiners whose work varies from recommendations should be prepared to provide justification. The voluntary nature of ASTM standards meant compliance varied across jurisdictions.

The standard's withdrawal in 2023 suggests either that the polygraph field has evolved beyond the original framework or that professional associations have assumed primary standardization responsibilities. Additionally, the standard focused primarily on training inputs (hours, curriculum topics) rather than competency outcomes or performance metrics. There was limited specification about assessment methods to verify that trainees actually achieved proficiency in PCSOT-specific skills.

The standard also did not address ongoing quality control or proficiency testing requirements beyond initial training, leaving maintenance of competency largely to continuing education hour requirements managed by professional associations.

Practical Applications

Despite its withdrawal, E2163's legacy persists in current PCSOT training programs. PCSOT certification courses consist of a minimum of 40 hours of specialized instruction approved by the APA, required for those seeking to become PCSOT certified with the American Polygraph Association. Examiner training programs, state licensing boards, and court-approved examiner lists continue to reference the 40-hour standard as a baseline qualification.

For examiners, the standard clarified career pathways and specialization requirements. For agencies contracting PCSOT services, it provided objective criteria for evaluating examiner qualifications. Examiners should not conduct more than five examinations per day, each examination must be scheduled for at least 90 minutes, and no more than four consecutive examinations per year should be conducted with the same individual, ensuring examinations remain thorough. These operational guidelines, informed by the standardization movement E2163 represented, continue to shape professional practice.