In grounded theory, researches collect data using theoretical sampling until theoretical saturation is achieved. This process can be summarized in the following sequence.
1
Sample Theoretically decided → Collect data → Analyse data → Theoretical Saturation
2
General research question → Collect data → Sample theoretically decided → Analyse data → Theoretical Saturation
3
Sample theoretically decided → General research question → Collect data → Theoretical Saturation
4
General research question → Sample theoretically decided → Collect data → Analyse data → Theoretical Saturation