Psychology is an impacted ("capped") major. Due to very high demand, special restrictions on declaration of the major are in effect. Transfer students must apply during their first semester. Non-transfer students must apply prior to exceeding 80 units of post-high school coursework. See the department website for details.
Psychology aims to describe, understand, and predict the behavior of living organisms. The major at Berkeley covers the many factors that influence behavior - from sensory experience to complex cognition, from the role of genetics to that of social and cultural environments, from the processes that explain behavior in early childhood to those that operate in older ages, and from normal development to pathological conditions.