Asking Sensitive Questions Using the Crosswise Model: Some ...

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Using RRT to Measure Plagiarism Results: plagiarism prevalence estimates (in percent) direct questions RRT difference seminar/term paper, 12.0 3.7 −8.3 diploma thesis (2.0) (4.0) (4.4) N = 266 N = 495 other written 19.4 17.6 −1.8 assignments (1.4) (2.4) (2.8) N = 826 N = 1521 (standard errors in parentheses) Jann/Jerke/Krumpal Sensitive Questions & the Crosswise Model Bremen 13.11.2009 14 / 23
Using RRT to Measure Plagiarism Explanations for the unexpected results: ◮ difficulties understanding RRT, no trust in RRT ◮ Web-surveys already anonymous enough? ◮ “Self-protective no” bias: Respondents who did not commit plagiarism are reluctant to give a “yes” answer to the non-sensitive question. Approaches to deal with the “self-protective no” bias ◮ directly approach the problem using specific instructions ◮ apply methods to detect cheaters and correct the RRT estimates ◮ use alternative methods that are not (or less) affected by the “self-protective no” bias Jann/Jerke/Krumpal Sensitive Questions & the Crosswise Model Bremen 13.11.2009 15 / 23
Page 1 and 2: Asking Sensitive Questions Using th
Page 3 and 4: Asking Sensitive Questions “A que
Page 5 and 6: Plagiarism Disciplinary Code of the
Page 7 and 8: Approaches to Estimate the Prevalen
Page 9 and 10: Some Previous Results on Plagiarism
Page 11 and 12: The Randomized Response Technique (
Page 13: Using Instrument: RRT to Measure RR
Page 17 and 18: The Crosswise Model (Yu, Tian, and
Page 19 and 20: Since we will not know your answers
Page 21 and 22: Using the Crosswise Model to Measur
Page 23: References Fox, James Alan, and Pau

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