Objective: To outline the utility of the Composite International Diagnostic
Interview (CIDI) in the diagnosis of psychosis.
Method: Report current situation.
Results: The CIDI was designed as a fully structured interview to be used b
y lay interviewers. It generates false positive diagnoses in community surv
eys and false negative diagnoses in psychiatric settings. A new psychosis m
odule has been developed to reduce these problems.
Conclusions: The diagnosis of psychosis by fully structured diagnostic inte
rviews is difficult.