This document discusses research types in social sciences. It describes research design as referring to the overall structure of a research project, including paradigmatic considerations, research questions and objectives, and data collection and analysis processes. Research methods refer to specific processes for sampling data sources, collecting data through techniques like interviews and questionnaires, validating data, and analyzing data. The three main research designs are quantitative research, qualitative research, and mixed methods research, which make use of quantitative, qualitative, or both quantitative and qualitative data collection and analysis methods, respectively.