First Advisor

Robert Jones

Date of Publication


Document Type


Degree Name

Master of Science (M.S.) in Psychology






Juvenile delinquents -- Psychological testing, Minnesota Multiphasic Personality Inventory, Sex offenders -- Psychological testing



Physical Description

1 online resource (52 p.)


This study examined the effectiveness of the MMPI in identifying juvenile sex offenders. This study examined the hypothesis that previously identified subscales of the MMPI (i.e., Toobert et al. (1959) Pe scale and Dolan (1986) Ic scale) could be used in discriminating juvenile sex offenders (n=l 02) (and subgroups of juvenile sex offenders i.e., pedophiles n=79, and incest perpetrators n=41) from a control group of 40 juvenile offenders who had been adjudicated for non-sex related crimes. The study yielded results which indicate that the Pe subscale was not effective in discriminating pedophiles from non-pedophile sex offenders or from the control group. The results also indicated that the Ic subscale was not effective in discriminating incest perpetrators from non-incest sex offenders or the control group. The results from the data also indicate that the control group appeared more pathological than the sex offender group, based on their respective MMPI profiles. In addition, in comparison with previous research on adult sex offenders, there appears to be differences between adult sex offenders and juvenile sex offenders when comparing mean two point code scores. Problems in defining subgroups were discussed. A lack of research in the area of juvenile sex offenders was identified and a strong recommendation for further research in this area was made.


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