Which of the following has NOT been shown to be effective in decreasing the number of refusals?
A)The use of incentives
B)Selling the respondent on the value of the research
C)Use of experienced interviewers
D)Guarantees of anonymity
E)They have all been shown to be effective.

Question

Quizplus · Accepted Answer

All of the given options have been shown to be effective in decreasing the number of refusals. Therefore, none of them can be considered as the option that has NOT been shown to be effective.

Which of the Following Has NOT Been Shown to Be