This document provides an introduction to behaviorism in psychology. It discusses key aspects of behaviorism such as defining behavior as responses to external stimuli that can be observed, the view that the mind is a "black box" that cannot be observed, and the idea that learning is defined as behavior changes due to environmental experiences. The document also summarizes the history of behaviorism including the influential work of John Watson and B.F. Skinner, and discusses concepts like classical conditioning, reinforcement, and how behaviorism influenced education with a focus on external motivation and reinforcement of behaviors.