Data from the assessment were compiled and analyzed using Monarch Adult Male Software Version 3.22f. This software guided the collection, management, and initial analysis of the PPG data. The software analyzed the PPG data and provided maximum scores and area- under-the-curve scores for each of the 22 segments of the test. A maximum penile tumescence score was calculated for each subject for each category of stimuli. For the purposes of this study, maximum penile tumescence was defined as any response above 20 points (.60 cm), which is 20% of the calibration of the gauge. Murphy and Barbaree (1994) argued that a minimum level for significance was 20%. To meet this requirement, a response was considered to be significant if it was at least 20/100-scaled units from the beginning of the stimulus detumesced level. Kuban, Barbaree, and Blanchard (1999) also suggested that this criterion was conservative. Subject's PPG calibration and projected full-scale responding were set to 3.0 cm. Thus, the cutoff of 20 points for significant responding falls within the 20% minimum criterion for significant responding. The subject's PPG calibration and projected full-scale responding were set to 3.0 cm circumference. A repeated measures ANOVA was performed on the PPG data to assess significant changes in arousal level throughout the study ( = .05). To assess sexual preferences, raw data for each subject were transformed to z-scores. The z-scores for each stimulus were recorded at baseline, on LA, and off LA. All the responses  1 SD, or the two highest responses, were recorded. Finally, a subject's classification as pedophilic/nonpedophilic was determined by using a deviance differential (Harris, Rice, Quinsey, Chaplin, & Earls, 1992). This was calculated using z-score data and taking the highest response to adults (male and female segments) minus the highest response to infants and children (male or female preschool or grammar school age). The adolescent segment was excluded from analysis. For the purposes of data analysis, deviance differential scores greater than 0 were classified as nonpedophilic and scores less than 0 as pedophilic. A deviance differential of O would mean that the subject was just as aroused to children as to adults.