Mail Survey Response Rates: Their Manipulation and Impact
1977 ◽
Vol 14
(3)
◽
pp. 391-395
◽
Keyword(s):
A study involving 2,416 randomly selected magazine readers indicated that response rates to mail questionnaires were significantly increased by the use of 25¢ premiums, but not by the use of a free-book premium or a free-book reward for responding. Response rates over time showed a very significant linear trend with an additional smaller cubic component. A complex significant (cubic) relationship between speed of response and favorability of expressed opinions reinforced conclusions that the broadest spectrum of opinions is obtained best by maximizing response rates.