It is sometimes good for you to appear slightly bewildered by the respondent's answer. Indicate in your probe that it might be you who did not understand. This can arouse the respondent's desire to help someone who is trying to do a good job. However, do not overplay this technique. The respondent should not get the feeling that you do not know when a question is properly answered.
Interviewers often have to separate the facts wanted from the respondent's attitudes.
Know how to probe when the answer is inadequate, while maintaining good rapport. We have stressed that you need to stimulate discussion. This does not mean that you should influence the respondent's answer or unnecessarily prolong the interview . Probing should be as neutral as possible so you do not distort the respondent's answers. When you ask neutral questions of all respondents, we have comparability between all the interviewers in the survey.