Instinct Theory

Instinct Theory was influenced by Charles Darwin's theory of evolution. During the 20th century, this theory was used mostly to classify different behaviors as instincts.
After a sociologist researched and concluded there were 5759 different human instincts, the Instinct Theory diminished and became less used within society. sociologists and theorists begun naming human behaviors rather than explaining them.
"Most psychologists view human behavior as directed by psychological needs and psychological wants." (Myers, 2007)
Due to Instinct Theory failing at describing and explaining motivation, the theory can be useful when explaining human similarities and differences, influence of evolution on human phobias, attraction and benefiting our understanding of behavior