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Respondents are asked to give up their time, engage in interactions controlled by the interviewer, think about issues or topics that might cause discomfort, and take the risk of being asked to reveal embarrassing information.
Potential participants might worry about privacy and lack of control over the information
The dominant mode of data collection from 1940 to 1970.
An in-person interview is conducted face to face.
In-person interviews are a good choice for questions involving complex reports of behavior, for groups difficult to reach by phone, or for respondents who need to see material or to consult records as part of the data collection, or when the interview is long, and high response rates are essential.