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Not all Anchors Weigh Equally.

Michael Greenstein1, Alexandra Velazquez2

  • 11 Department of Psychology and Philosophy, Framingham State University, MA, USA.

Experimental Psychology
|December 23, 2017
PubMed
Summary
This summary is machine-generated.

The anchoring bias is influenced by how numbers are presented. People anchor judgments differently to verbal numbers versus Arabic numerals, suggesting conceptual understanding is key.

Keywords:
anchoringdecision makingjudgment heuristicssemantic priming

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Area of Science:

  • Cognitive Psychology
  • Behavioral Economics

Background:

  • The anchoring bias, where initial information influences judgment, is well-documented but its underlying mechanisms remain unclear.
  • Research suggests both numeric and semantic priming contribute to the anchoring effect.

Purpose of the Study:

  • To investigate the role of numeric format (Arabic numerals vs. verbal) in the anchoring bias.
  • To determine whether the conceptual understanding or the absolute numeric value of an anchor has a greater impact on judgment.

Main Methods:

  • Participants were presented with anchors of the same value in either Arabic numeral (e.g., 1,200) or verbal (e.g., twelve hundred) format.
  • Experiments 1 and 2 compared responses to different anchor formats.
  • Experiment 3 explored the cognitive processes underlying format-dependent responses.

Main Results:

  • Significant differences were observed in how participants responded to Arabic numeral anchors versus verbal anchors.
  • These format-specific differences were primarily attributed to participants' tendency to process numbers in a digit-based format.

Conclusions:

  • The format in which numerical information is presented significantly affects the anchoring bias.
  • Conceptual processing of numerical information, rather than its precise numeric value, appears to be a more critical factor in anchoring effects.