Development of a short measure of psychological recovery in serious mental illness: The STORI-30

Abstract

Objective: To develop a brief measure of stage of psychological recovery from mental illness by identifying the best-performing items of the 50-item Stages of Recovery Instrument (STORI). Method: Item response modelling was used to identify a short form of the full-length STORI. The resulting items were subjected to factor analysis to further refine the subscales. A second data set was used to confirm the construct validity of the new measure. A correlational analysis was conducted to examine relationships among the five subscale scores. Results: Analyses identified 30 items that represented the five stages of the full STORI. The five stage subscale scores of the shorter measure, the STORI-3..