Polygraph examinations record physical responses, such as breathing, pulse, and skin conductivity, while a person answers questions. The results are interpreted in context and are not a direct measure of truth. Understanding how the process works can help people approach it with clearer expectations. An examination commonly includes a discussion of the questions and the procedures before recording begins. Conditions, individual responses, and examiner interpretation can affect results, and findings may be disputed. Anyone considering an examination can ask about consent, privacy, and how results will be used.
