Difference between the Scientific and Behavioral approach to International Relations?

Question

As per my shallow research, IR literature and online content intermix Scientific and Behavioral Approach to International Relations. What exactly is the difference between the Scientific and Behavioral approach to International Relations? Elaboration will be highly appreciated.

Answer 1

Behaviouralism (or behavioralism) is an approach in political science that emerged in the 1930s in the United States. It represented a sharp break from previous approaches in emphasizing an objective, quantified approach to explain and predict political behaviour.

Scientific approach to International Relations is an approach to international relations theory which believes in the unity of science, the idea that the social sciences are not fundamentally different from the natural sciences.