W. S. Small

Willard Stanton Small (August 24, 1870 – 1943) was an experimental psychologist. Small was the first person to use the behavior of rats in mazes as a measure of learning. In 1900 and 1901, he published his two-part "An Experimental Study of the Mental Processes of the Rat" in the American Journal of Psychology. The maze he used in this study was an adaptation of the Hampton Court Maze, as suggested to him by Edmund Clark Sanford at Clark University.