title: The mind-body problem in the early twentieth century.
mesh_terms: D001519:Behavior / Q000502:physiology; D004644:Emotions / Q000502:physiology; D004704:Endocrinology / Q000266:history; D049673:History, 20th Century; D007323:Instinct; D009482:Neurophysiology / Q000266:history*; D010686:Philosophy, Medical; D011584:Psychology / Q000266:history*