In selective coding the grounded theorist writes a theory form the interrelationship of the categories in the axial coding model. at a basic level, this theory from the interrelationship of the categories in the axial coding model. At a basic level, this theory provides an abstract explanation for the process being studied in the research. It is the process of integrating an refining the theory through such techniques as writing out the story line that interconnects the categories and sorting through personal memos about theoretical ideas.
Creswell, J. W. (2008). Educational Research. Planning, conducting, and evaluating quantitative and qualitative research. New Jersey. Pearson Education, Inc. (chapter 14, pg. 437)