An approach, primarily of historical interest, to describing the thinking process based on the belief that different mental capacities are controlled by specific locations in the brain.

Although people recognize the brain as the center of mental processes, this contemporary view has not always been accepted. Philosophers and scientists have proposed different ideas throughout history about the process of thinking that have since been rejected as inaccurate. One such rejected approach was phrenology. Phrenologists believed that our different mental capacities were controlled by specific locations in the brain. Although scientists today recognize the general validity of this belief, the problem was that the phrenologists developed ideas that did not really describe the way the brain functions.

German scientist Franz Joseph...