Robert Mearns Yerkes

Robert Mearns Yerkes was an influential American psychologist and primatologist, recognized for his pioneering contributions to intelligence testing and comparative psychology. He played a crucial role in advancing the understanding of both human and primate intelligence, particularly through his studies of gorillas and chimpanzees. Yerkes is perhaps best known for formulating the Yerkes–Dodson law with John D. Dodson, which describes the relationship between arousal and performance, a concept that has had lasting implications in psychology and education. Despite his significant contributions to the field, Yerkes's legacy is complicated by his advocacy for eugenics during the early 20th century. His support for eugenic theories, which are now largely discredited and viewed as biased, has led to a reevaluation of his work in contemporary academia. While Yerkes's research laid foundational stones in psychology, the ethical implications of his later views on race and intelligence continue to spark debate, marking him as a controversial figure in the history of psychology.