This document provides an overview of functionalism in psychology. It discusses that William James was the founder of functionalism and focused on studying the functions of the brain and the relationship between stimulus, mind, body, and action. Functionalism emerged as a reaction to structuralism and examined how behavior allows people to satisfy needs and adapt to their environment. It was influenced by Darwin's theory of evolution and viewed the mind as growing over time through experience rather than being static. Functionalism focused on mental functions and factors rather than just components of the mind like structuralism.