title: Psychological explanations and their vicissitudes.
mesh_terms: D001519:Behavior; D003071:Cognition; D003216:Conditioning, Operant; D004644:Emotions; D005197:Famous Persons; D049691:History, Medieval; D049711:History, Modern 1601-; D006801:Humans; D009042:Motivation; D010684:Philosophy / Q000266:history; D011582:Psychological Theory