Final answer:
William James rejected structuralism and focused on how mental processes help organisms adapt to their environment. His perspective, known as functionalism, emphasized studying the function of behavior in the world.
Step-by-step explanation:
William James rejected structuralism and focused on how mental processes help organisms adapt to their environment. He believed that psychology should study the function of behavior in the world, which is known as functionalism. Functionalism looks at how mental activities assist organisms in fitting into their environment. James used introspection, as well as more objective measures, to study mental activities and their impact on behavior.