Clever Hans (The Horse of Mr. Von Osten) / A contribution to experimental animal and human psychology

CLEVER HANS

(THE HORSE OF MR. VON OSTEN)
A CONTRIBUTION TO EXPERIMENTAL ANIMAL AND HUMAN PSYCHOLOGY
BY OSKAR PFUNGST
WITH AN INTRODUCTION BY PROF. C. STUMPF, AND ONE ILLUSTRATION AND FIFTEEN FIGURES
TRANSLATED FROM THE GERMAN BY CARL L. RAHN Fellow in Psychology in the University of Chicago
WITH A PREFATORY NOTE BY JAMES R. ANGELL Professor of Psychology in the University of Chicago
NEW YORK HENRY HOLT AND COMPANY 1911