What is Polygraph?

Psycho-physiological Detection of Deception (PPD) uses instruments to record involuntary physiological responses—like respiration, cardiovascular activity, and electrodermal activity—while the subject is presented with specific stimuli.

• "Psycho": Mental/emotional response
• "Physiological": Bodily changes
• "Detection of Deception": Interpreted by a trained examiner

Used in criminal investigations, intelligence work, security screenings, and civil truth verification.

1. Criminal Testing

• Law enforcement investigations
• Prosecutorial or post-conviction reviews
• Casino and tribal regulatory compliance

2. Pre-Employment Testing

For local, state, and federal agencies hiring for sensitive or critical roles.

3. Domestic & Infidelity Testing

• Clarifies infidelity concerns
• Supports emotionally charged decisions
• Encourages honest dialogue for rebuilding trust

4. Defense Attorney Testing

• Assess client credibility
• Prepare for trial or plea
• Support motions for dismissal or reductions

5. Drug Court Testing

• Detect compliance or drug use
• Support enforcement/treatment decisions
• Reinforce accountability in rehab programs