Identify one practical issue you would need to consider when using postal questionnaires to investigate role relationships within the family and explain how you would deal with this issue in your investigation.

Postal questionnaires are a quantitative research method with several practical issues. The most significant is often a low response rate, as recipients may discard them. This can make the final sample unrepresentative of the target population. Another issue is that questions must be clear and simple, as the researcher is not present to explain them. There is also the problem of not knowing who in the household actually completed the questionnaire, which is particularly relevant when investigating role relationships. Sociologists use strategies like incentives, follow-up letters, and carefully designed, easy-to-return forms to mitigate these problems.