Is the PPG a Valid Measure of Sexual Interest in Children?

Last Updated on September 24th, 2026 at 05:43 pm
Originally Published on July 18th, 2022 at 08:00 am

Overview

In this meta-analysis, the authors explain where the PPG excels and under what circumstances it falls short for predicting recidivism. This is a very important study if you are defending or evaluating a client whose crime is against a child.

Summary

A critical factor in almost every case of a sexual crime against a child is whether or not the perpetrator is a pedophile. 

A discussion of the difference between pedophilia and Pedophilic Disorder as diagnosed by the DSM-V is beyond the scope of this summary. A client’s actual sexual interest in children is important to know both for risk assessment and treatment planning.

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Reference

SOURCE RESEARCH

Validity in Phallometric Testing for Sexual Interests in Children: A Meta-Analytic Review

McPhail, I.V., Hermann, C.A., Fernane, S., Fernandez, Y.M. Nunes, K.L., & Cantor, J.M. (2019). Validity in Phallometric Testing for Sexual Interests in Children: A Meta-Analytic Review. Assessment 26(3), 535-551.

Published: 2019
Research type: Meta-Analysis

DOI: 10.1177/1073191117706139

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