To achieve the most reliable results, we recommend limiting the number of questions in one investigation to no more than five. Increasing the number of questions significantly reduces the accuracy of the obtained results. The duration of the test is between 1 to 2 hours. A test duration exceeding 2 hours is not recommended, as it may lead to fatigue, and adaptation could result in the absence of informative reactions. This means that, to answer one client’s question, the polygraph examiner utilizes a set of methodological techniques aimed at achieving the maximum reliability of the result. Screening (screening) checks are an exception, where the number of questions may exceed five but should not exceed 8-10. In each specific case, after studying your situation, the polygraph examiner will propose the optimal number of questions with the most accurate formulations.