期刊
SOCIAL SCIENCE COMPUTER REVIEW
卷 22, 期 3, 页码 355-362出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/0894439304263147
关键词
survey incentives; web-based surveys; methods; earthquake engineering; collaboratory
An experiment was conducted to determine the effectiveness of three invitation and incentive combinations in a web-based survey. A stratified convenience sample of 434 researchers who were target users of a collaboratory for earthquake engineering was randomly divided into three experimental conditions: (a) a $5 bill sent with the survey instructions via first class mail, (b) a $5 gift certificate code to Amazon.com sent with the survey instructions via first-class mail, or (c) a $5 gift certificate code to Amazon.com sent with the survey instructions via e-mail. Overall response was 43%. Results show that $5 bills led to significantly higher response rates than either gift certificate condition (57% for cash vs. 36% for the two gift certificate conditions, chi(2)(1) = 9.3, p <. 01). This suggests that cash is a superior incentive for an online survey, even with technologically sophisticated respondents. This may be due to the perceived limitations, delayed payoff, or reduced visibility of online gift certificates.
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