Inter-Rater and Test-Retest Reliability, Internal Consistency, and Factorial Structure of the Instrument for Forensic Treatment Evaluation

 

 

DOI:10.1080/15228932.2014.897536

Erwin Schuringa, Marinus Spreen & Stefan Bogaerts

Journal of Forensic Psychology Practice

Volume 14, Issue 2, 2014

14 Apr 2014

 

 

http://www.tandfonline.com/doi/abs/10.1080/15228932.2014.897536

 

Abstract

In this study, the Instrument for Forensic Treatment Evaluation (IFTE) is introduced. The IFTE includes 14 dynamic items of the risk assessment scheme HKT-R and eight items specifically related to the treatment of forensic psychiatric patients. The items are divided over three factors: protective behavior, problematic behavior and resocialization skills. Inter-rater reliability and test-retest reliability ranged from moderate to almost perfect in a Dutch population of 232 forensic patients. Factor analysis largely confirmed the factor structure. The IFTE is evaluated to be a reliable routine outcome monitoring instrument for supporting and indicating inpatient forensic psychiatric treatment evaluations and processes.