Basics

A tree of ideas

Follow the branches to meet contributors and the questions they explored.

A tree groups 22 thinkers into eight areas of work, with philosophy and physiology at its roots.
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The picture in words

Early scientific psychology
Wilhelm Wundt, William James, Mary Whiton Calkins
Learning and behavior
Ivan Pavlov, John B. Watson, B. F. Skinner
Psychodynamic approaches
Sigmund Freud, Carl Jung, Karen Horney
Gestalt psychology
Max Wertheimer, Wolfgang Köhler, Kurt Koffka
Humanistic psychology
Abraham Maslow, Carl Rogers
Cognition and memory
Ulric Neisser, Elizabeth Loftus
Development and attachment
Jean Piaget, Lev Vygotsky, Mary Ainsworth
Social life and learning
Kurt Lewin, Albert Bandura, Mamie Phipps Clark

Philosophy and physiology appear at the roots as two historical foundations.

Reading the illustration

The branches organize selected contributions by area of work. Many ideas and careers connect several branches. This selection emphasizes European and North American traditions.

Try a question

How might one contributor connect several branches of this tree?

Show the explanation

A researcher can investigate learning, development and social relationships within the same career. The branches give you several routes into that work.

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