Yu, Tian, and Tang (2008) proposed two new techniques for asking questions on sensitive topics in population surveys: the triangular model (TM) and the crosswise model (CM). The two models can be used as alternatives to the well-known randomized response technique (RRT) and are meant to overcome some of the drawbacks of the RRT. Although Yu, Tian, and Tang provide a promising theoretical analysis of the proposed models, they did not test them. We therefore provide results from an experimental survey in which the crosswise model was implemented and compared to direct questioning. To our knowledge, this is the first empirical evaluation of the crosswise model. We focused on the crosswise model because it seems better suited than the triangular model to overcome the self-protective ''no'' bias observed for the RRT. This paper-and-pencil survey on plagiarism was administered to Swiss and German students in university classrooms. Results suggest that the CM is a promising data-collection instrument eliciting more socially undesirable answers than direct questioning.

This research analyzes the effectiveness of the list experiment and crosswise model in measuring self-plagiarism and data manipulation. Both methods were implemented in a large-scale survey of academics on social norms and academic misconduct. As the results lend little confidence about the effectiveness of the methods, researchers are best advised to avoid them or, at best, to handle them with care.

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