Face-to-Face Interviews and Mailed Questionnaires: The Net Difference in Response Rate |
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| Authors: | GOYDER JOHN |
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| Institution: | John Goyder is Associate Professor, Department of Sociology, University of Waterloo, Ontario, Canada N2L 3G1. The work reported herein was supported by a Canada Council Leave Fellowship held by the author during a stay at Cambridge University in 1978, and by a UW-SSHRC grant awarded in 1981. The author is greatly indebted to Cathie Marsh andothers at the Social and Political Sciences Committee, Cambridge, for hospitality and research resources. Research Assistants were Norleen Heyzer and Kerry Davies at Cambridge and Jean Leiper and Olorunfe Taylor-Cole at Waterloo. |
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| Abstract: | Traditionally, as reflected in methodology textbook reviewsof the survey nonresponse literature, interviews have been thoughtto achieve substantially higher response rates than mailed questionnaires.The paper describes a correlational design for assessing thetypical response difference between these two forms of datacollection, after controls for other factors known to affectsurvey response. Attention is given to change over time in theresponse difference between interviews and questionnaires. Inthe primary data set, the net response due to data collectionamounts to some 7.5 percentage points, in the middle (30–70)range of survey response. The analysis quantifies the declineover time in interview response, and shows mailed questionnairesto be free from decline. A second data set reproduces the essentialfindings. |
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