Classification and Diagnosis of Schizophrenia

DSM-IV

The diagnostic and statistical manual of mental disorders, 4th edition is the official classification system of the American Psychiatric Association but is used worldwide. 

The classification system then places disorders into categories.

Reliability of diagnosis

Refers to the consistency of symptom measurement.

• Test-retest reliability - occurs when a practitioner makes the same consistent diagnosis on seperate occasions from the same information.
• Inter-rater reliability - occurs when several practitioners make identical,independent diagnoses of the same patient. 

Evaluation

• Practitioners have to make subjective decisions due to the wording of the…