Get full access to this article View all access and purchase options for this article. References American Psychiatric Association. (2000). Diagnostic and statistical manual of mental disorders (4th ed., text rev.). American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). American Psychiatric Publishing. Birchwood M., Todd P., Jackson C. (1998). Early intervention in psychosis: The critical period hypothesis. The British Journal of Psychiatry, 172(Suppl.
