What is "faculty psychology"

Faculty psychology views the mind as a collection of separate modules or faculties assigned to various mental tasks. The view is explicit in the psychological writings of the medieval scholastic Theologians, such as Thomas Aquinas.

It is also present, though more implicitly, in Franz Joseph Gall's formulation of phrenology, the now-disreputable practice of measuring personality and sensory traits by estimating brain mass of organs on one's head to determine ways to improve faults. However, faculty psychology has been revived in Jerry Fodor's concept of modularity of mind, the supposition that different modules autonomously manage sensory input and other mental functions.