Developmental Theories

Cognitive Development


Jean Piaget
Jean Piaget Archives
Is a depository of information on Jean Piaget, his biography, theories and writings.

Jean Piaget Society
This site is dedicated to the work of Jean Piaget and states that it is a "society for the study of knowledge and development."  See the resources for students and links.  Site also includes a biography of Jean Piaget.


Lev Vygotsky
Lev Vygotsky Archive
A comprehensive website on the life and works of Lev Vygotsky.

The Vygotsky Project
Highlights Vygotsky's ideas and interests.  Includes many papers and discussion on: The Man and his Ideas; Vygotsky Compared to Others; Vygotsky in Practice; Vygotskian Concepts; Related Authors; and, Further Study on Vygotsky.

Vygotsky Resources
An extensive site on Vygotsky, including biographical information, photo archive, theories, information for teachers, practices and more.

Videos on Vygotsky

Play: A Vygotskian Approach (Davidson Films)

Vygotsky's Developmental Theory: An Introduction (Davidson Films)



Psychosexual Development, Libido, Oedipal & Electra Complex

Sigmund Freud

Sigmund Freud-Freud Museum, London
An overview of the life and work of Sigmund Freud and the second home of Freud and his daughter Anna when they had to flee Vienna, which is now a museum.

Freud Museum-Vienna
An overview of the contributions of Sigmund Freud and a virtual tour of Freud's home in Vienna, which is now a museum.  The site also includes a biography of Freud, his daughter Anna, his publications, a photo archive and much more.

Psychosocial Development

Erik Erikson

Erik Erikson-Biography
An overview of Erikson's theory on psychosocial and personality development.

Erik Erikson-A Psychosocial Theory of Development
My overview and critique of Erikson's theory of psychosocial development.

Biography of Erik H. Erikson: Identity's Architect
Erik Erikson tried to create a vision of psychological energy and health.


Development of Moral Reasoning & Character

Lawrence Kohlberg, Thomas Lickona & Carol Gilligan


Ethics Updates
Presents overview and explanations of ethical theories and applied ethics, including bioethics, reproductive technologies, animal rights, race and ethnicity, euthanasia, sexual orientation, abortion, world hunger and many more.

Thomas Lickona: Character Development and the Character Education Partnership
The Character Education Partnership was founded by developmental psychologist, Thomas Lickona. The national organization is committed to developing civic virtue and moral character in our youth for a more compassionate and responsible society.

Lawrence Kohlberg- Theory of Moral Development
A comprehensive site on the life, theory and works of Lawrence Kohlberg.

Moral Development and Moral Education: An Overview
Examines the moral theories of Jean Piaget, Kohlberg and Carol Gilligan.

Psychology of Morality & Democracy
Site on moral development at the University of Konstanz in Germany. Includes work of Piaget and Kohlberg with a dedication to Kohlberg.