An experimental comparison of Web and telephone surveys
An experimental comparison of Web and telephone surveys
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DOI：
10.1093/poq/nfi027
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发表时间：
2005-09-01
影响因子：
3.4
通讯作者：
Yan, T
中科院分区：
文献类型：
--
作者：
Fricker, S;Galesic, M;Yan, T
我们进行了一项实验，比较了电话和网络版本的问卷调查，评估对科学的态度和基本科学事实的知识。随机数字拨号（RDD）样本的成员最初通过电话联系，并回答了一些筛选问题，包括一个询问他们是否有互联网接入。那些可以上网的人被随机分配完成网络版的问卷调查或计算机辅助电话采访。有四个主要发现。首先，虽然我们为分配到网络调查的案例提供了更大的激励，但完成在线问卷的人很少;几乎所有分配到电话条件的人都完成了采访。然而，这两个网络用户样本具有相似的人口统计特征。第二，网络调查产生的项目无应答比电话调查。网络调查问卷提示受访者-当他们留下一个项目空白，而电话采访者接受“没有意见”的答案，而不探究他们。第三，网络受访者的态度比他们的电话同行电池的差异性较小的答案。最后，网络受访者花了更长的时间来完成的知识项目，特别是那些需要开放式的答案，比电话受访者，和网络受访者回答正确的百分比更高。网络和电话调查之间的这些差异可能反映了这两种模式之间的内在差异和我们实施调查的附带特征。模式差异也因项目类型和受访者年龄而异。
We carried out an experiment that compared telephone and Web versions of a questionnaire that assessed attitudes toward science and knowledge of basic scientific facts. Members of a random digit dial (RDD) sample were initially contacted by telephone and answered a few screening questions, including one that asked whether they had-Internet access. Those with Internet access were randomly assigned to complete either a Web version of the questionnaire or a computer-assisted telephone interview. There were four main findings. First, although we offered cases assigned to the Web survey a larger incentive, fewer of them completed the online questionnaire; almost all those who were assigned to the telephone condition completed the interview. The two samples of Web users nonetheless had similar demographic characteristics. Second, the Web survey produced less item nonresponse than the telephone survey. The Web questionnaire prompted respondents- when they left an item blank, whereas the telephone interviewers accepted "no opinion" answers without probing them. Third, Web respondents gave less differentiated answers to batteries of attitude items than their telephone counterparts. The Web questionnaire presented these items in a grid that may have made their similarity more salient.Finally, Web respondents took longer to complete the knowledge items, particularly those requiring open-ended answers, than the telephone respondents, and Web respondents answered a higher percentage of them correctly. These differences between Web and telephone surveys probably reflect both inherent differences between the two modes and incidental features of our implementation of the survey. The mode differences also vary by item type and by respondent age.