Grounded Theory is used to develop theory from data. It is a qualitative method, based on several stages of analysis of primary data. Open coding is first used to generate a set of themes, which are then categorized into higher level concepts using a process called focussed coding. The production of theoretical memos to explore the ideas behind the categories provides a synthesis of new ideas, and these can then be used to support the extraction of a core category. The core category illustrates the relationships between the categories, but this can take the form of a model, typology or even a storyline. The core category could also be described as a thesis.