Overview
In 1972, researchers at Washington University led by John Feighner proposed a set of diagnostic rules to be operationalized for psychologists and psychiatrists:
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Primary Affective Disorders, divided into depression and mania
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Seconday Affective Disorders, like depression resulting from another disorder or condition
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Schizophrenia
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Anxiety Neurosis
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Obsessive-Compulsive Neurosis
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Phobic Neurosis
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Hysteria
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Antisocial Personality Disorder
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Alcoholism
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Drug Dependence
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Mental Retardation
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Anorexia Nervosa
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Homosexuality
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Undiagnosed Psychiatric Illness, for when the other categories fail to describe someone’s condition or they don’t strictly meet the explicated criteria