Grounded theory is a qualitative research methodology that aims to build theory from data. It involves collecting and analyzing data to develop concepts and build relationships between concepts to form theories. The grounded theory process involves initial coding of data, focused coding to synthesize codes into categories, theoretical sampling to refine categories, and memo writing to develop theoretical concepts. Studies using grounded theory are evaluated based on their focus, purpose, methodology, sampling strategy, data analysis process, theoretical findings, and conclusions.