Behavioral science is a vast field that studies human behaviour as well as the psychological and social elements that influence it. To examine and comprehend these complicated processes, behavioural scientists employ a variety of methodologies. Fundamental research, applied research, action research, exploratory research, descriptive research, diagnostic research, evaluative research, experimental research, analytical research, historical research, survey research, and case study research are some of the research methods available. Each of these methods has pros and cons, and researchers must choose the most appropriate method for their research problem, resources, and ethical considerations.