This document discusses qualitative research methods. It defines qualitative research as a scientific method that collects non-numerical data through observation to answer questions about why and how phenomena occur rather than how often. Some key characteristics are that qualitative research aims to understand phenomena through discovery of subjective data and holistic analysis. Common types of qualitative research include case studies, grounded theory, phenomenology, ethnography, and historical research. The document contrasts qualitative and quantitative research methods.