Psychology is the study of behavior and its relationship to brain systems. Because both behavior and the brain are complex, psychology has many subdivisions and areas of specialization. For example, behavioral neuroscientists study the brain mechanisms of learning, memory, emotion, drug action, and biological disease states such as Alzheimer's Disease, anxiety disorder and schizophrenia. Cognitive psychologists study cognitive models of the mind, language, memory, and basic sensory processes. Clinical psychologists study a variety of behavioral disorders including those involved in fear, eating disorders, and substance abuse. Social psychologists examine behavior in social contexts as well as the development of a self-concept. Developmental psychologists are broadly interested in all of these topics, with a focus on how maturity and experience influence changes in these processes. Health psychologists focus on understanding the reciprocal relationships linking psychological/behavioral factors to physical health outcomes.

Career in related fields.