Empirical studies on the longitudinal change of risk factors during treatment of forensic psychiatric patients are scarce. Therefore, in the current study, changes in risk factors of 341 high-security forensic psychiatric patients in Flanders were investigated using latent growth curve analyses. Annual assessments of the Historical Clinical Future-Revised (HKT-R) at three time points were considered, starting at time of admission. A significant small improvement was found on the future scale and most future factors. However, the clinical scale did not change significantly and only one of the 14 clinical factors (i.e., problem insight) changed significantly over time. Although the forensic treatment seems to be a slow process, the sensitivity of the HKT-R to detect clinically relevant change is questioned, underscoring the importance of determining whether there are instruments capable of detecting small significant changes over time.
Keywords: forensic psychiatry; latent growth curve analysis; risk factors.