Psychology is the scientific study of the human mind and behavior. It aims to explain how people think, feel, and act. Psychology has established itself as a separate science through the work of Wilhelm Wundt, who opened the first experimental psychology lab in 1879. There are several research methods in psychology including correlational research, descriptive research, and experimental research. Key areas of psychology include abnormal, biological, clinical, cognitive, comparative, developmental, forensic, industrial-organizational, personality, school, and social psychology.