However, the lack of a probability sampling technique is not viewed as a limitation if you used a qualitative research design.
In qualitative research designs, a non-probability sampling technique is typically selected over a probability sampling technique. Even if you used a quantitative research design, but failed to employ a probability sampling technique, there are still many perfectly justifiable reasons why you could have made such a choice.
For example, we know that when adopting a quantitative research design, a failure to use a probability sampling technique significantly limits our ability to make broader generalisations from our results (i.e., our ability to make statistical inferences from our sample to the population being studied).
However, the degree to which this reduces the quality of our findings is a matter of debate.
There is no "one best way" to structure the Research Limitations section of your dissertation.
However, we recommend a structure based on three moves: the announcing, reflecting and forward looking move.
This should significantly strengthen the quality of your Research Limitations section.
Finally, the forward looking move builds on the reflecting move by suggesting how the limitations you have discuss could be overcome through future research.
As mentioned, if you used a quantitative research design in your dissertation, the lack of probability sampling is an important, obvious limitation to your research.
This is because it prevents you from making generalisations about the population you are studying (e.g.