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Research article

First published 2018-8

Reducing “I Don’t Know” Responses and Missing Survey Data: Implications for Measurement

Deanna C. Denman, Austin S. Baldwin, Andrea C. Betts [...]

Medical Decision Making

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Other

First published 2005-06

Authors’ response to DL Loe and DK Tiller

GR Newsham, C Richardson, C Blanchet [...]

Lighting Research & Technology

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Other

First published 1996-03

Socio-demographic correlates of DK-responses in knowledge surveys: self-attributed ignorance of science

Martin Bauer

Social Science Information

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Research article

First published 2025-1

Examining the use of explicit ‘no opinion’ options in attitude survey design

Michael D. Mattei, Stephen J. Hellebusch, Matthew D. Mattei

International Journal of Market Research

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Research article

First published 2016-2

Handling Do-Not-Know Answers

Edith D. de Leeuw, Joop J. Hox, Anja Boevé

Social Science Computer Review

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Other

First published 2003-09

Comment 1 on ‘Measuring the subjective response to interior lighting: paired comparisons and semantic differential scaling’ by KW Houser and DK Tiller

DL Loe

Lighting Research & Technology

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Other

First published 2003-09

Comment 2 on ‘Measuring the subjective response to interior lighting: paired comparisons and semantic differential scaling’ by KW Houser and DK Tiller

GR Newsham

Lighting Research & Technology

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Research article

First published 2016-10

Unfolding IRT Models for Likert-Type Items With a Don’t Know Option

Chen-Wei Liu, Wen-Chung Wang

Applied Psychological Measurement

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Other

First published 1996-03

Partial non-response and “don't know” responses in surveys on sexual behaviour

Alain Giami

Social Science Information

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Research article

First published 2013-2

“Don’t Know” Responses to Risk Perception Measures

Erika A. Waters, Jennifer L. Hay, Heather Orom [...]

Medical Decision Making

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