Don't forget about the Respondent as a person
When developing the questionnaire, sometimes a paradoxical situation arises in order to obtain reliable results in the course of the sociological survey, the sociologist thinks about the issues and completely forgets about the Respondent. Why it is considered that the Respondent is obliged to answer all the questions and he'll answer anyway, what would he have proposed the question. This expresses a misunderstanding of the role of the Respondent in the study, and even manifests a basic lack of respect to him, the underestimation of the nature of the relationship between the sociologist and the Respondent.
When I every morning and every evening I pass by the controller in the subway and show him the ticket, I don't see him as a person, with all the diversity and richness of personal characteristics. At the moment it acts only as the executor of a certain function, however, and he treats me only as a passenger, with or without a ticket, which you should skip or not to skip the subway. It's natural. With all the variety of relations between people functional and indicative of when the most frugal, but agree, not the most pleasant.