Foot-in-the-door strategy

One of the strategies adopted by the interviewers to motivate the respondents in providing the information in a survey or experiment. Here, the interviewer starts with a relatively small request in which a large majority of people will comply. The smaller request is followed by a larger request, the critical request, which solicits participation in the survey or experiment. The rationale is that compliance with the initial smaller request should increase the chances of compliance with the subsequent request..