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Unpleasant odors increase aversion to monetary losses.
Andrej Stancak1, Yuxin Xie2, Nicholas Fallon1
1Department of Psychological Sciences, University of Liverpool, Liverpool L69 7ZA, UK.
Biological Psychology
|February 26, 2015
Summary
Unpleasant odors increase loss aversion, making people more sensitive to potential financial losses. This suggests our brains adapt decision-making based on environmental threat cues, like bad smells.
Area of Science:
- Neuroscience
- Behavioral Economics
- Sensory Perception
Background:
- Loss aversion describes the tendency to avoid losses more than acquiring equivalent gains.
- Unpleasant odors activate brain regions overlapping with those involved in loss aversion.
Purpose of the Study:
- To investigate if unpleasant odors enhance loss aversion in a monetary gamble task.
- To determine if odor pleasantness, not intensity, influences changes in loss aversion.
Main Methods:
- Thirty human subjects participated in a monetary gamble task.
- Gambles were presented with unpleasant (methylmercaptan), pleasant (jasmine), or neutral (clean air) odors.
- Loss aversion was quantified using non-linear fitting of individual decisions.
Main Results:
- Loss aversion was significantly higher with unpleasant odors compared to pleasant or neutral odors.
- Individual differences in loss aversion changes correlated with odor pleasantness.
- Skin conductance responses to losses were greater with unpleasant odors.
Conclusions:
- Unpleasant odors dynamically increase loss aversion, enhancing sensitivity to losses.
- This heightened loss aversion may be an adaptive response to perceived threats or danger.
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