Distorted or maladaptive thinking is widely acknowledged as an importa
nt variable in both the initiation and maintenance of sexual offending
. The aim of this study was to develop a descriptive model to classify
sex offenders' cognitions concerning their offending behavior Offense
descriptions were obtained from 20 incarcerated male child sex offend
ers undergoing assessment for a sex offender treatment program. A data
-driven approach to model development-grounded theory-was taken in the
qualitative analysis of these offense accounts. The resulting model c
onsisted of four categories: offense chain, cognitive operations, cogn
itive content, and meta-variables. To determine its content validity a
nd reliability, the model was applied to the offense descriptions of a
sample of 25 incarcerated child molesters also undergoing pretreatmen
t assessment Results suggest that the model has provisional validity a
nd adequate interrater reliability. Finally, the authors discuss the t
heoretical and clinical implications of the model.