Simple Models for Multiattribute Choice with Many Alternatives: When It Does and Does Not Pay to Face Trade-offs with Binary Attributes
Given the difficulties people experience in making trade-offs, what are the consequences of using simple models that avoid trade-offs? We examine choices by such models in environments where "true" preferences are linear and attributes are characterized by binary attributes. A deterministic elimination-by-aspects (DEBA) model is highly effective over a range of conditions. When preferences are quite compensatory, however, a modified equal weighting (EW) model that uses DEBA to resolve ties is more effective. We explore the sensitivity of results to errors in using DEBA, to different distributions of alternatives, and to error in "true" preferences. Under the conditions examined here, the outcomes of these "boundedly rational" models are highly consistent with "rational" models that explicitly confront trade-offs. We emphasize the importance of binary attributes in reaching these conclusions.
Volume (Year): 51 (2005)
Issue (Month): 12 (December)
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- Manel Baucells & Juan A. Carrasco & Robin Hogarth, 2005.
"Cumulative dominance and heuristic performance in binary multi-attribute choice,"
Economics Working Papers
895, Department of Economics and Business, Universitat Pompeu Fabra.
- Baucells Alibés Manel & Carrasco López Juan Antonio, 2006. "Cumulative Dominance and Heuristic Performance in Binary Multi - Attribute Choice," Working Papers 201047, Fundacion BBVA / BBVA Foundation.