Choose a research theme. Gather your data through the reading of applicable documents and in-person interviews. A good example of how to apply grounded theory would be if a researcher would ask a juvenile to explain his experiences growing up. The line of questioning will assist the researcher in identifying more issues to look for during the research procedure.
Gather data by utilizing the research technique that is best for the subject you're researching. Your subject matter will generally determine the grounded theory. Grounded theory is purposive sampling. This means that research participants are chosen in part for who they happen to be and information they know.
Classify the data. To apply grounded theory, you'll need to read all of your interview notes after completing the interviews. Go over all of the transcripts to make a note of vital themes. The data coding you are now using is a vital part of the investigation.