How to Use the Sex Offender Treatment Intervention and Progress Scale (SOTIPS)

Robert J. McGrath


The Sex Offender Treatment Intervention and Progress Scale (SOTIPS) is a 16-item statistically derived, provider-administered, dynamic measure. It is used with a static measure, such as the Static-99R, to aid clinicians and probation and parole officers in assessing risk, treatment and supervision needs, and progress among adult males convicted of sex offenses. This workshop will describe the psychometric properties of the SOTIPS, use case studies to illustrate how it is scored, and identify its practical applications and limitations. 


Robert McGrath is president of McGrath Psychological Services and has over 35 years of clinical, program management, consulting, and research experience in the field of sexual aggression. For over 20 years, he was Clinical Director of the Vermont Department of Corrections network of three prison and twelve community treatment programs for sexual offending. He has served on the advisory boards of several treatment programs in the United States and the national programs in Canada, the United Kingdom, and Hong Kong. Among his publications, he is co-author of the ROSAC and SOTIPS risk assessment instruments. He is the 2015 recipient of the Lifetime Significant Achievement Award from the Association for the Treatment of Sexual Abusers.