n is taken here that behavior of man and the behavior of animals must be considered on the same plane; as being equally essential to a general understanding of behavior (http://fates.cns.muskingum.edu/~psych/psycweb/history/watson.htm)." Watson was very interested in lab rats and how their behavior could be used to predict human behavior. John also did extensive work with monkeys and their ability to perceive color and motion. This work with monkeys was done in conjunction with one of Watson's friends and correspondents Robert Yerkes. "Yerkes came to Hopkins [University] as a visiting scientist and he and Watson made use of the visit to develop a new apparatus and method for the study of visual discrimination in animals (www.brynmawr.edu/Acads/Psych/rwozniak/watson2.html)." Although Yerkes and Watson were interested in studying the same things, they didn't always agree, especially when it came to Watson unveiling his new school of thought.
             John Watson worked on perfecting his new psychology for many years and wondere
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