Q: What are the limitations of a study and how to write them?
The limitations of a study are its flaws or shortcomings which could be the result of unavailability of resources, small sample size, flawed methodology, etc. No study is completely flawless or inclusive of all possible aspects. Therefore, listing the limitations of your study reflects honesty and transparency and also shows that you have a complete understanding of the topic.
Generally speaking, the limitations are added in the Discussion section, just before the concluding paragraph. While you should definitely point out the limitations, do not get into an elaborate discussion about them. Keep this section short and crisp. The limitations of a study basically discusses any unanswered questions that your study did not address. Could you have used another means or method of data collection? Could the research design have been better? Was the sample not representative of the target population? Being self-critical and acknowledging the study’s limitations will give the impression that you are aware of what the study was not able to cover. Moreover, it would prevent the peer reviewer from pointing them out.