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The evaluability bias in charitable giving: Saving administration costs or saving lives?
Lucius Caviola1, Nadira Faulmüller2, Jim A C Everett3
1Department of Experimental Psychology, University of Oxford, 9 South Parks Road, Oxford, OX1 3UD, U.K.
Judgment and Decision Making
|October 4, 2014
Summary
The evaluability bias shows people favor charities with low overhead ratios because they are easier to assess. When comparing charities, however, people prioritize cost-effectiveness, demonstrating this bias emerges when evaluation is difficult.
Area of Science:
- Decision Science
- Behavioral Economics
- Charitable Giving
Background:
- The evaluability bias describes the tendency to overvalue attributes that are easier to evaluate.
- This bias can significantly impact decision-making processes, particularly in complex choices like charitable donations.
Purpose of the Study:
- To investigate the influence of the evaluability bias on charitable giving decisions.
- To explore how the ease of evaluating charity attributes affects donation behavior.
Main Methods:
- Four studies were conducted to test the evaluability bias in the context of charitable giving.
- Participants evaluated charities based on overhead ratios and cost-effectiveness, sometimes in isolation and sometimes comparatively.
Main Results:
- Donors preferred charities with low overhead ratios when presented individually, irrespective of cost-effectiveness.
- When presented with multiple charities, donors prioritized cost-effectiveness, indicating the bias is context-dependent.
- A low overhead ratio was also valued intrinsically, and its ease of evaluation was enhanced by ratio-based presentation.
Conclusions:
- The evaluability bias significantly affects charitable giving, leading to a preference for easily evaluated metrics like overhead ratios.
- Donors' decision-making shifts towards more objective metrics like cost-effectiveness when comparative evaluation is facilitated.
- Understanding the evaluability bias can help charities communicate their impact more effectively.
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