Name the Psychologist
100

Psychoanalytic & Psychosexual Theory

Who is Sigmund Freud?

200

Psychological theory of development & Psychosocial 

Who is Erick Erickson?

300

Coined the term "maturation"

Who is Dr. Arnold Gessel?

400

Cognitive Development theories including cognitive processes of perception, language, memory and thinking/logic

Who is Jean Piaget?

500

Attempted scientific record keeping of human development through his children

Who is Charles Darwin?

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