Functionalism was the first school of thought in American psychology, founded by William James in the late 19th century. It grew out of Darwin's theory of evolution and focused on how the mind helps humans adapt and function in their environment. Functionalists studied mental processes and consciousness with the goal of understanding their practical utility, rejecting the idea of breaking down consciousness into elements as structuralists did. They wanted psychology to have diverse methods and real-world applications rather than being a narrow, formal science.