The Research Diagnostic Criteria (RDC) are a collection of psychiatric diagnostic criteria published in late 1970s . As psychiatric diagnoses widely varied especially between the USA and Europe, the purpose of the criteria were allow diagnoses to be consistent in psychiatric research. Some of the criteria were based on the earlier Feighner Criteria, although many new disorders were included. The RDC is important in the history of psychiatric diagnostic criteria as the DSM-III was based on many of the RDC descriptions.

See also

• Schedule for Affective Disorders and Schizophrenia
  Schedule for Affective Disorders and Schizophrenia
  The Schedule for Affective Disorders and Schizophrenia is a collection of psychiatric diagnostic criteria and symptom rating scales published in 1978. There are three versions of the schedule, the regular SADS, the lifetime version and a version for measuring change in symptomology...
  
  
• Diagnostic classification and rating scales used in psychiatry
  Diagnostic classification and rating scales used in psychiatry
  The following diagnostic systems and rating scales are used in psychiatry and clinical psychology.-Diagnostic Criteria:*Diagnostic and Statistical Manual of Mental Disorders *ICD-10 Chapter V: Mental and behavioural disorders...