From Aristotle to Sigmund Freud and Abraham Maslow ... factors (such as adoptive parents) seem to play a surprisingly small role. The theory’s creators distinguish enduring personality traits ...

Freudian psychology is based on the work of Austrian neurologist Sigmund Freud ... most heavily on Freudian principles. Freud also developed influential theories about subjects such as the ...

Sigmund Freud was born in the Austro ... split from the group with bitter feelings. Freud continued working, developing his theories, and writing -- producing a stunning volume of work.