Inductive (induced) delusion is a pathological self-confidence in one’s own rightness, which arises as a result of the patient’s overworked thinking in the situation of a monotonous and lengthy conversation with him or monotonous reading aloud of medical documents, which are obviously perceived by the patient as offensive and biased. In Russian, this kind of delusion is the result of a violation of “common sense” and appeals to the conscience of the patient.