#Subjects from the general population of Central Prison, Raleigh, NC, #volunteered for an experiment involving an ``isolation'' #experience. (Those convicted of felon offenses are housed in this #facility.) The experimental treatment exposed inmates to combined #sensory restriction and suggestion. The intent was to reduce the #psychopathic deviant T scores (Pd T), Scale 4 of the Minnesota Multiphasic #Personality Inventory (MMPI) test. #Briefly, the three treatments consisted of # # 1) Four hours of sensory restriction plus a 15 minute ``therapeutic'' # tape advising that professional help is available. # 2) Four hours of sensory restriction plus a 15 minute ``emotionally # neutral'' tape on training hunting dogs. # 3) Four hours of sensory restriction but no taped message. # # Forty-two subjects were assigned to one of the three treatment groups #(for a total of 14 in each treatment group). #For each subject the MMPI was administered before and after the #experimental treatment. Pre-treatment and post-treatment values of #Pd T scores are given below for the 42 individuals. # PreTrt1 PostTrt1 PreTrt2 PostTrt2 PreTrt3 PostTrt3 67 74 88 79 86 90 86 50 79 81 53 53 64 64 67 83 81 102 69 76 83 74 69 67 67 64 79 76 81 76 79 81 76 69 76 81 67 74 71 71 74 69 67 50 67 75 60 60 69 60 69 64 67 69 57 57 67 64 86 83 76 62 67 64 86 107 90 76 74 71 74 71 71 71 81 74 71 71 93 76 81 64 71 81