Abstract
The present paper examines the problematic application of polygraph testing to child sexual abuse cases. Psychopysiological methods to assess the veracity of child sexual abuse allegations are being advocated despite a failure of empirical research to support the validity of polygraph testing and the absence of adequate validity studies for its application to child sexual abuse. The use of plygraph testing in child sexual abuse matters is especially problematic because of the nature of sexual abuse. Processes associated with the offender's perception of events, emotional arousal associated with investigations, and base rates of sexual abuse all suggest problems with the use of polygraph testing.