who would have been most likely to ignore mental processes and to define psychology as ""the scientific study of observable behavior""?

A behaviorist such as John B. Watson and B. F. Skinner would disagree with the notion that psychology is the scientific study of mental processes. This is because behaviorism is a psychology school of thought wherein human behavior can be simply explained in terms of conditioning, without regard to thoughts or feelings. Please see my comment for more information. I hope this helps; have a great day.

how do you know that

explanation:

the economic difference between the three colonial regions. shipbuilding, whaling, fishing, and trapping where also main factors to the economy. the southern regional colonies economy was based on sugarcane, rice, cotton, tobacco, and indigo.