The document discusses behaviorism and its application to language learning and instructional design. It covers the key theorists of behaviorism like Skinner, Watson, and principles such as positive/negative reinforcement and conditioning. Behaviorism views learning as the formation of habits through stimulus-response associations that are strengthened by repetition and reinforcement. The learner is passive and the teacher controls the environment. Instruction follows principles like contiguity and uses techniques like praise and feedback to elicit the desired response from learners. Evaluation focuses on measurable behaviors to confirm learning occurred.