Truth Verification (Lie Detector Tests)
A private lie detector test is when a person voluntarily takes a lie detector test in order to demonstrate that he or she is being truthful about a matter. This is frequently done in the;
- Public Safety Pre-Employment Background Investigations for government agencies such as police, sheriff, ranger, dispatcher, probation officers, investigator, and other sensitive employees.
- Employers of prospective employees of armored cars, security alarm, and security guard firms who protect facilities, materials or operations affecting health or safety, national security, or currency and other like instruments and other qualified under the restrictions of the Employee Polygraph Protection Act.
- Employers of prospective employees of pharmaceutical and other firms authorized to manufacture, distribute, or dispense controlled substances who will have direct access to such controlled substances.
- The legal Community to includes defense attorneys, district attorneys, public defenders, police, and sheriff’s offices who frequently use lie detectors in criminal cases to exonerate a defendant.
- Attorneys in various civil litigation.
- Employers who reasonably suspect and employee’s involvement in a workplace incident that results in economic loss to the employer and who had access to the property that is the subject of an investigation, as well as current employees who had access to persons or property that are the subject of an ongoing investigation.
A CVSA can be used in person, over the phone, or from a recording while interviewing a candidate and the information can be sent for analysis.
Based on a study conducted by Professor James Chapman over an 18-year period of approximately 3000 CVSA exams, the accuracy rate was of 99.69 %, a precision rate of 99.67%, and a verified confession rate of 96.4%.
This study substantiates the CVSA is a useful and predictive decision support tool for separating the innocent from the guilty and those who tell the truth and those who lie.