This is the most common concern. General emotions, test anxiety, or fear are perfectly natural and represent the subject's baseline. The examiner uses control questions to establish this baseline. Deception-specific reactions are evaluated through clear physiological deviations recorded only on relevant (critical) questions compared to control questions, so general nervousness cannot accidentally trigger a false-positive result.

Preparation is extremely simple: ensure you are well-rested (a good 7-8 hours of sleep is ideal), eat normally before the test, and avoid excessive caffeine, alcohol, or any sedatives on the day of the test. If you are taking mandatory prescription medication, it should be continued normally and declared to the examiner during the pre-test phase.

Individuals with severe heart conditions or major respiratory disorders can only be tested with their doctor's consent. Generally, we do not recommend testing pregnant women due to ethical considerations and the complex physiological changes of the body during pregnancy, which can alter the charts.

When the examination is conducted by an accredited expert using standardized protocols (such as ARPJ or APA), the accuracy exceeds 90% - 95%. There is a very small margin of error, which usually arises from extreme attempts to use countermeasures or poor question phrasing, which is why we pay extreme attention to the preliminary phases.

Minors can only be tested with the express, prior written consent of their parents or legal guardians. Furthermore, the test is only conducted if the minor possesses the full mental capacity to understand the exact meaning of the questions asked, and the assistance of a parent or psychologist is mandatory.