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Legal Medicine - Deception Detection

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  • I. DEVICES WHICH RECORD THE PSYCHO -PYSIOLOGICAL RESPONSE:

  • POLYGRAPH

    Concerned with the HOW you answered.

  • Reasons for the inadmissibility of the polygraph results in courts:

  • ERROR FACTORS:

    Nervousness and extreme emotional tension experienced by the subjectPhysiological abnormalitiesMental abnormalitiesUnresponsiveness in a living or guilty subjectAttempts to beat the machine

  • WORD ASSOCIATION TESTMeasures the TIME INTERVAL between the stimulus words and the response.

    Answer is of no moment.

  • Psychological Stress Evaluator

    Based on the science of GRAPHONICS where speech is composed of audible and inaudible and inaudible frequencies at an oscillation rate of 8-14 cycles per second.

    When a person is stressed or lying, the microtremor in the voice utterance is suppressed.

  • Effects upon the local courts:

    Polygraph

    Word Association Test

    Psychological Stress Evaluator

    Inadmissible

    but with strong PERSUASIVE effects !

  • II. Drugs that INHIBIT the INHIBITOR:

  • The TRUTH SERUM

    a state of delirium is induced

    When the proper point is reached, the questioning begins and the subject feels a compulsion to answer the question truthfullyHyoscinehydrobromide

  • NARCOSYNTHESIS or NARCOANALYSISSodium AmytalSodium Penthotal

  • ALCOHOL INTOXICATION

    the MASK of SANITY

    IN VINO VERITAS

  • III.

  • Why HYPNOSIS is inadmissible in COURTIt lacks the general scientific acceptance of reliabilityThe judge may give it uncritical and absolute reliabilityThe hypnotized subject may deliberately fabricateThe subject may be in a state of heightened suggestibilityThe state of mind, skill and professionalism of the examiner are too subjective

  • IV. OBSERVATION

  • Signs and Symptoms of GUILT

  • SCIENTIFIC INTERROGATIONMutt and Jeff techniqueSplit-Pair technique