Editing William James (section)

== Instincts ==
{{See also|Instinct}}
Like [[Sigmund Freud]], James was influenced by Charles Darwin's theory of natural selection.<ref name="Buss 1" /> At the core of James's theory of psychology, as defined in ''[[The Principles of Psychology]]'' (1890), was a system of "instincts". James wrote that humans had many instincts, even more than other animals.<ref name="Buss 1" /> These instincts, he said, could be overridden by experience and by each other, as many of the instincts were actually in conflict with each other.<ref name="Buss 1">Buss, David M. 2008. "Chapter 1." pp. 2–35 in ''Evolutionary psychology: the new science of the mind''. [[Pearson Education|Pearson]].</ref>
In the 1920s, however, psychology turned away from evolutionary theory and embraced radical behaviorism.<ref name="Buss 1" />