Question: who was one of the first theorists to emphasize the role of thought in depression

title: Behavioral theories of depression
text: Behavioral theories of depression emphasize the role maladaptive actions play in the onset and maintenance of depression . These theories stem from work concerning the principles of learning and conditioning from the early to mid-1900s . Ivan Pavlov and B.F. Skinner are often credited with the establishment of behavioral psychology with their research on classical conditioning and operant conditioning , respectively . Collectively , their research established that certain behaviors could be learned or unlearned , and these theories have been applied in a variety of contexts , including abnormal psychology . Theories specifically applied to depression emphasize the reactions individuals have to their environment and how they develop adaptive or maladaptive coping strategies . 

Answer: answer: Behavioral theories of depression emphasize the role maladaptive actions, and Ivan Pavlov and B.F. Skinner are often credited with the establishment of behavioral psychology with their research on classical conditioning and operant conditioning that specifically applied to depression.