T here are many reasons to study psychology and many different psychologies to study.
Whether you wish to engage in rigorous inquiry or have only a casual interest in why people think, feel, and act as they do, you will discover that psychology is a fascinating subject. Rooted in both philosophy and science, psychology is the orderly and systematic study of behavior and mental processes. Biological psychologists, for instance, study the biochemistry of the brain and the functions of its numerous structures. Cognitive psychologists and other experimental psychologists explore the factors involved in sensation and perception, memory, problem solving, language, or emotion. Some of these psychologists are involved in building computer models of intelligence and thinking.