Based on principles of learning and conditioning, the behavioral model has had an important and lasting impact on our understanding of psychopathology. The behavioral model focuses more on PRECISE MEASUREMENT than the psychoanalytic and humanistic approaches.
The behavioral model emerged through the foundational work of Ivan Pavlov and B.F. Skinner - and posits all behavior to be a response to environmental and social stimulus. Since the emphasis on learning is directed away from internal mental processes - it is only observable and measurable (bodily) acts that have analytical significance. Therefore, psychopathologies can be corrected with the two techniques: classical conditioning (where an existing response elicited by one stimulus is transferred to a new stimulus) and operant conditioning (where responses are strengthened or weakened through positive or negative reinforcement). Given the desire to isolate the effects of these particular techniques on learning, behavioralist methods favor laboratory settings which allow for greater control over variables, objectivity, and precision in measurements.