Hello Vardan Atoyan . As you must have noticed there are several, from qualitative to quantitative paradigms. I believe this link can help when it comes to your question. Check it out: https://scholarcommons.usf.edu/cgi/viewcontent.cgi?article=1002&context=oa_textbooks

Dear Olutayo Kadmiel Osunsan ,

Thank you for your valuable input!

My favorite ones are comparison, case studies, and interviews.

Dear Dr. Ruben Elamiryan ,

Thank you for your valuable comment!

Dear Neha Christie

Thank you for sharing your experience and for your valuable input!

Hi. whether the social science research is done using either qualitative or quantitative method it is important to choose the right tool based on the research objectives. Thanks

Dear Shamima Raihan Manzoor ,

Thanks for your comment!

The scientific method, as applied to social sciences, includes a variety of research approaches, tools, and techniques, for collecting and analyzing qualitative or quantitative data. These methods include laboratory experiments, field surveys, case research, ethnographic research, action research, and so forth.

Social Science Research: Principles, Methods, and Practices

Principles, methods, and practices...

Bhattacherjee, A. (2012). Social science research: Principles, methods, and practices.

Method bias aspect...

Podsakoff, P. M., MacKenzie, S. B., & Podsakoff, N. P. (2012). Sources of method bias in social science research and recommendations on how to control it. Annual review of psychology, 63, 539-569.

case of info sci.

Wildemuth, B. M. (Ed.). (2016). Applications of social research methods to questions in information and library science. ABC-CLIO.

Improving causal inference...

Murnane, R. J., & Willett, J. B. (2010). Methods matter: Improving causal inference in educational and social science research. Oxford University Press.

Applied meta-analysis...

Card, N. A. (2015). Applied meta-analysis for social science research. Guilford Publications.

Dear D A Gayan Nayanajith , thank you for your valuable contribution!