grounded theory
Useful for creating new theories through a constant cycle of formulating and testing hypotheses.
According to Grounded Theory-Hook “the GT process starts with data collection, gradually building up categories and forming a theory, before linking that theory to previous literature at the end.” The same book chapter lays out a good technique for conducting grounded theory.
Basics Of Qualitative Research-Corbin has good info about how to conduct and validate qualitative research
Heavily influenced by researcher bias