The scientific study of animal and human behavior . Overt behavior is observable, visible. Covert behavior includes private behavior, such as thoughts, feelings, and fantasy. Anything a person does is considered behavior. History Wilhelm Wundt - Began the first Psychology laboratory in Liepzig, Germany in 1879.
People often disagree.
Developed the Functionalist school of psychology. Functionalists were interested in the function of the mind, not in the building blocks of experience. John Watson - Developed school of thought known as Behaviorism . Stated that only overt behavior was appropriate for study by psychologists. Behavior modification is the application of learning principles to changing inappropriate or self-defeating behavior.