Computer-assisted personal interviewing (CAPI) refers to survey data collection by an in-person interviewer (i.e. face-to-face interviewing) who uses a computer to administer the questionnaire to the respondent and captures the answers onto the computer.
CAPI method can enhance the quality of survey data in a number of ways:
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Routeing problems within the questionnaire are eliminated
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Interviewers cannot miss questions or ask the wrong questions
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Questions are 'customised' correctly
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Mathematical calculations can be carried out within the program
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The computer checks for inadmissible or inconsistent responses
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Errors from separate data entry are eliminated.