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Interviewer effect
The interviewer effect (also called interviewer variance or interviewer error) is the distortion of response to a personal or telephone interview which results from differential reactions to the social style and personality of interviewers or to their presentation of particular questions. The use of fixed-wording questions is one method of reducing interviewer bias. Anthropological research and case-studies are also affected by the problem, which is exacerbated by the self-fulfilling prophecy, when the researcher is also the interviewer it is also any effect on data gathered from interviewing people that is caused by the behavior or characteristics (real or perceived) of the interviewer.
Interviewer effects can be mitigated somewhat by randomly assigning subjects to different interviewers, or by using tools such as Computer Assisted Telephone Interviewing (CATI).
==See also==
* Observer-expectancy effect
* Experimenter's bias
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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