Examining the psychometric properties of a crisis recovery in psychosis (CRISP) measure

Abstract Background Psychotic crises are complex idiosyncratic experiences and currently there are no validated measure which examine the recovery from such experiences. The aim of this study was to develop and psychometrically validate the crisis recovery in psychosis (CRISP) measure. Methods The 23-item CRISP was developed in partnership with a coproduction group of people with lived experience, family/carers and clinicians who had experience of mental health crisis care. A longitudinal design was adopted with 80 participants participating in the study, completing the CRISP along with other relevant measure at three time points to psychometrically validate it. The CRISP was examined for internal consistency, test-retest reliability, criterion validity, construct validity, sensitivity to change and floor and ceiling effects. Results Initial examination of item performance resulted in 9 items being removed due to low correlations (