title: The Reactivity of Psychosis Rating Form (RPRF): background, development and psychometrics.
abstract: The ICD-10 and DSM-IV classifications have both given low priority to "reactivity" to acute stress as a classificatory principle for functional psychoses. In Scandinavia, reactivity is still considered an important factor in the development of such psychoses. Reactivity is a complex concept, and its various components are historically examined. The Reactivity of Psychosis Rating Form (RPRF) was developed in order to operationalize reactivity. Seven of the 10 elements of RPRF can be rated reliably. Factor analysis of the RPRF yields three factors: stressor, onset and change, that also show high interrater reliability. Our results indicate that RPRF has both construct and discriminant validity. Further studies with the RPRF may elucidate the true status of reactivity in functional psychoses.
authors.affiliation: Institute Group for Psychiatry, University of Oslo, Norway.
authors.forename: C A
authors.initials: CA
authors.lastname: Guldberg
authors.forename: A A
authors.initials: AA
authors.lastname: Dahl
authors.forename: A
authors.initials: A
authors.lastname: Bertelsen
authors.forename: H
authors.initials: H
authors.lastname: Hansen
authors.forename: J
authors.initials: J
authors.lastname: Haslerud
authors.forename: K
authors.initials: K
authors.lastname: Hytten
authors.forename: K
authors.initials: K
authors.lastname: Narud
mesh_terms: D006801:Humans; D009664:Norway; D015588:Observer Variation; D011569:Psychiatric Status Rating Scales / Q000706:statistics & numerical data*; D011594:Psychometrics; D011618:Psychotic Disorders / Q000145:classification / Q000175:diagnosis* / Q000523:psychology; D015203:Reproducibility of Results; D012559:Schizophrenia / Q000145:classification / Q000175:diagnosis; D012565:Schizophrenic Psychology; D013315:Stress, Psychological / Q000150:complications*