This document discusses different types of studies and research methods used in social and social work research. It outlines qualitative and quantitative research methods. Qualitative methods are aimed at understanding human behavior and social processes, and include case studies, content analysis, narrative methods, and ethnography. Quantitative methods adopt a positivist perspective and use standardized data collection to test hypotheses, and include census, opinion polls, and evaluating relationships between variables. The document also distinguishes between pure research, driven by intellectual curiosity to expand knowledge, and applied research, which is problem-oriented and aims to inform actions or policies. In conclusion, it advocates that integrating qualitative and quantitative methods can produce richer results than using a single methodology.