“…This is what Conti and Pudney (2011) call "put on a good show for the visitor" effect in F2F interviews. The social interaction of the respondent with the interviewer has been documented to lead to more socially desirable responses (Tourangeau and Smith, 1996;Presser and Stinson, 1998;Tourangeau and Yan, 2007), though others have found limited effects of a social desirability bias (Fowler et al, 1999;Kaplan et al, 2001). On the other hand, an interviewer can "increase response and item response rates, maintain motivation with longer questionnaires, probe for responses, clarify ambiguous questions, help respondents with enlarged show-cards of response choice options, use memory jogging techniques for aiding recall of events and behaviour, and control the order of the questions" (Bowling, 2005) and assure respondents on the confidentiality of their data (Nandi and Platt, 2011).…”