the early 1980s, the A&W fast-food restaurant chain…
““the early 1980s, the A&W fast-food restaurant chain introduced a burger with a third of a pound of beef to compete with McDonald’s popular quarter pounder. Although most customers preferred A&W’s new burger in taste tests, it was a big disappointment in the marketplace. When focus groups were run to get to the bottom of this paradox, A&W discovered that many customers thought a burger with one-third of a pound of beef was less generous than one with one-quarter of a pound. Customers were attending to the denominator, just not very intelligently: The smaller “3” led many to conclude that one-third is smaller than one-quarter!21””
About This Quote
This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.
People misinterpret numerical fractions, focusing on the denominator and assuming a larger denominator means a smaller amount, leading to poor decisions.
In simple terms: People get confused by fractions, thinking a larger denominator means less.
Key Takeaway
Beware of denominator bias in judgments.
Themes
cognitive bias
decision making
perception
Mood
confused
reflective
Type
analytical
educational
When to use this quote
- marketing
- product pricing
- consumer research
- education
- financial decisions
Key Concepts
fraction bias
numeracy
psychology
Questions to Reflect On
- How can you present quantities to avoid denominator bias?
- What other everyday judgments are affected by similar biases?
A Different Perspective
The bias can be mitigated with clear visual comparisons or absolute values.