Interviewer effect

The interviewer effect (also called interviewer variance or interviewer error) is 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).[1]

See also

References

  1. Groves, Robert M.; Lou J. Magilavy (1986). "Measuring and Explaining Interviewer Effects in Centralized Telephone Surveys". Public Opinion Quarterly 50 (2): 251. doi:10.1086/268979. ISSN 0033-362X.