Elicitation and Context Effects in Judgments: Fixed Sum Versus Fixed Scale Frames
AbstractTwo apparently similar methods for making numerical judgments about a set of objects (point allocation and direct rating) have been shown to yield different profiles of values (here, numerical judgments) attached to Ranks. Direct rating typically leads to a nearly linear relationship of Value with Rank. When using point allocation, people tend to produce a half U-shape of Value with Rank, evidenced by a positive quadratic term in Rank, which is not present for direct rating. We argue that point allocation imposes a fixed-sum frame on the judgment task. Furthermore, certain problems, such as allocating a budget, are intrinsically framed as fixed-sum. These problems also lead to quadratic curvature of numerical judgment with Rank. We discuss the implications of these effects, both in formal and informal contexts.
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Bibliographic InfoArticle provided by INFORMS in its journal Management Science.
Volume (Year): 45 (1999)
Issue (Month): 7 (July)
numerical judgments; point allocation; direct rating; budget allocation; framing;
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- Bottomley, Paul A. & Doyle, John R., 2013. "Comparing the validity of numerical judgements elicited by direct rating and point allocation: Insights from objectively verifiable perceptual tasks," European Journal of Operational Research, Elsevier, vol. 228(1), pages 148-157.
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