Summarize the difference between structuralism and functionalism.

The key defenders for the school of structuralism were Wilhelm Wundt and Edward Bradford Titchener, while the persuasive figures who built up the school of functionalism were William James, G. Stanley Hall and James M. Cattell. Structuralists concentrated on "how" the psyche is organized, while functionalists dove in "why" and "how" the mind capacities.