title: Clever Hans is still whinnying with us.
authors.affiliation: Royal Veterinary and Agricultural University, Grønnegårdsvej 8, 1870 Frederiksberg, Denmark. jal@kvl.dk
authors.forename: Jan
authors.initials: J
authors.lastname: Ladewig
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology*; D003071:Cognition / Q000502:physiology*; D003213:Conditioning, Psychological / Q000502:physiology; D006736:Horses / Q000502:physiology* / Q000523:psychology*; D007858:Learning / Q000502:physiology*