title: Scientific theory and operational definitions in psychopathology. With special reference to alcoholism.
mesh_terms: D000437:Alcoholism / Q000266:history; D001007:Anxiety; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008128:Logic; D011599:Psychopathology / Q000266:history; D012586:Science; D019966:Substance-Related Disorders