The Influence of arbitrary breakpoints on judgments of maximum output

Mauricio Palmeira, Eduardo Andrade, Shahin Sharifi, Wen Mao, Jorge Jacob

Research output: Contribution to journalArticle


Consumers often wonder about the product?s maximum output: the highest rotation speed of a blender or the best printing quality of a printer. We examine how the number of levels (e.g., a blender with 3 vs. 7 speeds) influences judgments of maximum product output. Objectively speaking, the number of levels is no more than a set of breakpoints in an already pre-determined continuum from the product?s minimum to maximum output. Nevertheless, because of the ubiquitous association between number of breakpoints and quantity in daily life, consumers do not simply view more levels as a signal of greater precision (i.e., giving consumers more control over the possible outputs). They also incorrectly believe that the product has greater power (i.e., a higher maximum output), even when such an inference is in conflict with diagnostic attribute information (e.g., watts). A series of 5 studies documents the phenomenon, its asymmetric nature, and its boundary conditions. Reliance on the inaccurate ?more levels-more power? lay theory weakens when participants consider a reduction rather than an increase in number of levels, and it disappears when the consumer is presented with an explicit relationship between each level and its corresponding output value (e.g., level 4: 400 W).
Original languageEnglish
JournalJournal of Consumer Psychology
Early online date9 Nov 2019
Publication statusE-pub ahead of print - 9 Nov 2019



  • bias
  • consumer inference
  • erroneous beliefs
  • lay theories
  • maximum output
  • numerosity

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