Inclusion and Exclusion Criteria
Articles in Dutch, English, French, and German were considered and articles in which the content of the nursing process is described were included with no special requirements regarding research design of the publication type. Given that the 1.85% life-time prevalence of psychotic disorders involves mostly schizophrenia, bipolar disorder, and major
depressive disorder with psychotic features (Pera¨la¨ et al., 2007), it was decided to only include articles that concerned these disorders in the present review. The exclusion criteria were thus: