Self-incrimination is a volitional action, caused by certain reasons, based on specific motives and goals. False admission of guilt by person suffering from mental disorders has special place in criminal proceedings and significantly affects the reliability of testimony given by that person. To effectively deal with the lies of mentally abnormal persons, investigator needs to know the nature of such lie. With healthy individuals, lie is dictated by the target setting and real motives, and with mentally ill people, it is the result of their painful motives. There are quite a few variants of manifestations of deceit. It depends not only on the variety of delusional influences on a person, but also on nature of a mental disorder, constitutional predisposition, characteristics of the central nervous system, upbringing, etc. That kind of person, in the course of communication with investigator, ascribes himself crimes committed by others or accuse himself in crimes that did not actually have a place in reality but are result of painful fantasizing or extraneous suggestion.
self-incrimination, lie, accurate testimonial, mental disorders, painful impulses, mentally abnormal person, suspect, investigator
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