Interviews introduce more bias than does the use of questionnaire. examine critically
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Bias occurs when a measurement tends to be consistently higher or lower than the population value
Interviews pose a danger of bias due to poorly constructed questions on inaccuracies due to poor recall or the interviewee gives what the interviewer wants to hear
The interviewer may unwittingly manipulate the events thereby changing the objectives of the questions
Different interviewers get different answers because of the way they place different emphasis on individual words in questions and because of different probes (additional questions) that they follow up with
Leading question may introduce bias because the direction of the questions suggest certain answers
Interviews pose a danger of bias due to poorly constructed questions on inaccuracies due to poor recall or the interviewee gives what the interviewer wants to hear
The interviewer may unwittingly manipulate the events thereby changing the objectives of the questions
Different interviewers get different answers because of the way they place different emphasis on individual words in questions and because of different probes (additional questions) that they follow up with
Leading question may introduce bias because the direction of the questions suggest certain answers
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