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Updated: Aug 14, 2025

Olfactory Context Dependent Memory: Direct Presentation of Odorants
Published on: September 18, 2018
How priming with body odors affects decision speeds in consumer behavior
Mariano Alcañiz1, Irene Alice Chicchi Giglioli2, Lucia A Carrasco-Ribelles2,3
1Instituto de Universitario de Investigación Centrada en el Ser Humano (Human-Tech), Universitat Politécnica de Valencia, Valencia, Spain. malcaniz@i3b.upv.es.
Human body odors, including chemosignals for happiness and fear, significantly speed up consumer purchase decisions. This occurs because body odors signal the presence of others, influencing decision-making speed.
Area of Science:
- Consumer behavior
- Sensory marketing
- Human chemosignals
Background:
- Odor research traditionally focuses on common scents and consumer perception.
- Limited research exists on the impact of human body odor cues on consumer behavior.
Purpose of the Study:
- To investigate the novel effects of human body odor chemosignals on consumer purchase decisions.
- To examine how different emotional states (happiness, fear, rest) conveyed via body odor influence willingness to pay (WTP) and decision speed.
Main Methods:
- Participants' willingness to pay (WTP) for various products was assessed.
- Exposure to human chemosignals from different emotional states (happiness, fear, rest) and a control (no odor) condition.
- Response times for purchase decisions were measured.
Main Results:
- Exposure to human body odors, regardless of emotional state, led to significantly faster decision-making compared to the no-odor control group.
- Human chemosignals appear to activate the perception of social presence during consumer decision-making.
- This activation influences the speed at which consumers make purchase judgments.
Conclusions:
- Human body odors play a previously unrecognized role in accelerating consumer purchase decisions.
- The presence of social cues, even olfactory ones, impacts economic decision-making speed.
- Findings have significant implications for understanding and applying sensory marketing strategies.
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