Disadvantages of the interview
Interviewing is time consuming and expensive.
Quality of data depends upon the quality of the interaction.
Quality of data depends upon the quality of the interviewer.
Quality of data may vary when many interviewers are used.
The researcher may introduce his bias. If the interviews are conducted by a person, other than the researcher, it is possible that he may exhibit bias in the way he interpret responses, select response categories or choose words to summarize respondents’ expressed opinions.
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