No, most everyone (guilty and innocent) taking a test may be nervous throughout a polygraph examination. However, we do all that is possible to put each person at ease prior to administering the test. Nervousness is constant and consistent from the beginning, middle, and end of the testing period. The reactions of a guilty subject are quite different to specific questions than those of an innocent subject. An Expert Polygraph Examiner such as Stan Fulmer can easily distinguish the difference in nervousness and the deceptive reaction of the guilty.