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an ot . an oe & , _ . ; : . . r 6 FEDERAL BUREAU OF INV esucann® 1 Dote of transcription — Ly, 1 i f 74 Technical Developmen ane, Bethesda, arviangd = fas : pierviewed 9’ oe, ‘ * AiS.company has engineered a voidée analyzer called a Mark YI Voice Analyzer, which measures stress in the human voice. He is furnishing, free of charge, a mathematically based voice analysis of a@ poor copy: ° of a less then one minute excerpt from the last PATRICIA HEARST tape (indicating willingness to join SLA). This tape was obtained from the Management xs Safeguard Company, New York City, New York who prepar@ipe it from news media sources, Wiiiiemeee? onpany has worked. on measuring emotional stress in individuals' voices for both the governmental and private sectors, oteeane UTNished a one page grephic and verbatim transcript of the recording with selected words keyed on a scale fram 20 to 60. Hormal beginning stress levels in most individuals are values in the high 30's or 4ots. Higher levels are indicative of very strong stress although not necessarily higher in proportion, Working without control stress levels, Opinion is that PATRICIA HEARST is very stressed auring the wee tion of the tape but there is no evidence ing ven caticn to indicate she was forced to hake the statement under duress. The pattern of emotional reactions gs indicated by the values set out, shows sincere and net #ppcars for her to be normal emotional reactions ‘for the situation. “ - Interviewed on uy, 16/ 74 9! Oote dictorea_ E1774 This document contains neilher rerommendntane nor eontlusions af the FRE tt is the Broperty of the FB and is looned to your agency: D and its contents ore nol to be disitibctad oviside yout agency.