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Charles Darwin publishes his book
Charles Darwin publishes his book "On the Origin of the Species" about evolution and natural selection http://www.biography.com/people/charles-darwin-9266433#awesm=~oGCUa5tMKzpUGu -
The looking glass self by Cooley
Charles Horton Cooley publishes Human Nature and the Social Order using the term "the looking glass self" for the first time http://www.popularsocialscience.com/2013/05/27/the-looking-glass-self-how-our-self-image-is-shaped-by-society/ -
Mead and the Symbolic Interaction Theory
George Herbert Mead of the Chicago school influences the development of the symbolic interaction theory which states that actions are based on the meanings people attribute to the behavior http://sociology.about.com/od/Sociological-Theory/a/Symbolic-Interaction-Theory.htm -
Freud's Psychoanalytic Theory
Sigmund Freud develops his psychoanalytic theory involving the id, the ego, and the superego http://www.muskingum.edu/~psych/psycweb/history/freud.htm -
Piaget's 4 Stages of Development
Piaget states that children go through four stages of development that will shape them for their entire adult life http://www.webmd.com/children/piaget-stages-of-development -
B.F. Skinner
B.F. Skinner coins operant conditioning and the idea of positive reward and negitive feedback based on previous work by Thorndike http://www.simplypsychology.org/operant-conditioning.html -
Julian Rotter publishes his book
Rotter publishes his book entitled Social Learning and Clinical Psychology. This book tied together social learning theory and personality theory http://psych.fullerton.edu/jmearns/rotter.htm -
Carl Rogers
Carl Rogers builds upon the previous theories of Abraham Maslow to state that humans have one central motive - to self-actualize "The organism has one basic tendency and striving - to actualize, maintain, and enhance the experiencing organism" http://www.simplypsychology.org/carl-rogers.html -
Lawrence Kohlberg
Kohlberg develops his theory on moral development based on Piaget's stages of development http://faculty.plts.edu/gpence/html/kohlberg.htm -
Albert Bandura
Albert Bandura states that behavior is learned from the environment through observational learning based on his famous Bobo Doll experiment http://www.simplypsychology.org/bobo-doll.html http://www.simplypsychology.org/bandura.html
