Methods of Data Collection and Mode of Administration
Methods of Data Collection and Mode of Administration
Methods of Data Collection and Mode of Administration
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Measurement: Interviewer• Advantages <strong>and</strong> disadvantages <strong>of</strong> presence <strong>of</strong> interviewer• Presence <strong>of</strong> interviewer enables use <strong>of</strong> more complex instruments <strong>and</strong>mixed modes (e.g., audio-CASI)• Presence <strong>of</strong> interviewer may increase roh_int• Advantages <strong>of</strong> centralized telephone interviewing (compared todecentralized telephone or face-to-face)• Increases st<strong>and</strong>ardization <strong>and</strong> therefore reduces roh_int• Training is cheaper, can be more intensive, <strong>and</strong> be ongoing• Continuous supervision <strong>and</strong> monitoring are possible• Greater flexibility in assignment <strong>of</strong> cases• Disadvantage <strong>of</strong> centralized telephone interviewing• Without travel burden, telephone interviewers can have largerworkloads, which may lead to larger impact <strong>of</strong> rho_intMeasurement: Instrument• Length <strong>of</strong> questionnaire• Complexity <strong>of</strong> instrument• Skip patterns, branching, instructions• Alternative measurement tools <strong>and</strong> visual aids: showcards,observation, direct measures, etc.• Error checks, range checks• Question form• Open questions• Number <strong>of</strong> response alternatives• Effects on answers• Item nonresponse• Social desirability• Effects <strong>of</strong> response order• Primacy <strong>and</strong> recency• Effects <strong>of</strong> question order• Assimilation <strong>and</strong> contrastPaper vs computer• <strong>Data</strong> Quality• Little effect on unit nonresponse, item nonresponse• Timeliness• Effects on production schedule• Complexity <strong>of</strong> the survey instrument• Computer-assisted interviews can include dependentinterviewing, complex fills, complex skips• Computer-assisted instruments produce meta-data (such astiming) at little additional cost• Difficult to compare costs• Computer-assisted instruments are <strong>of</strong>ten more complex thanpaper• Testing <strong>and</strong> debugging• Project management may be more complex for CAIEffect <strong>of</strong> dependent interviewing on longitudinaldata• Substantial proportion <strong>of</strong> monthly industry <strong>and</strong> occupation changes inCPS found to be spurious (Collins, 1975)• 39% <strong>of</strong> those reporting no job change have different occupation code insuccessive months• 21% <strong>of</strong> those reporting no change in employer had different industrycodes• CATI/RDD test using dependent interviewing (Dippo et al., 1994)• 7% changed occupation code from month to month• 5% changed industry code from month to month
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