Why is smell imagery often weak?
Evolutionary and cognitive factors make smell harder to simulate than vision or audition for most people. Item difficulty and less daily practice imagining scents both contribute.
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Imagination Index vs SIAQ
SIAQ measures olfactory (smell) imagery ability for research. Imagination Index includes olfactory prompts alongside five other senses. Weak smell imagery is normal for many people—Imagination Index shows whether your olfactory score is typical or an outlier in your profile.
Last updated: May 20, 2026
Smell is the least vivid sense for many people in self-report studies. SIAQ formalizes olfactory imagery measurement; Imagination Index places it in context with vision, sound, movement, taste, and touch.
SIAQ vs Imagination Index
| SIAQ | Imagination Index | |
|---|---|---|
| Focus | Olfactory imagery only | Six senses incl. smell |
| Population context | Research norms | Sample avg ~42/100 olfactory |
| Best for | Chemosensory research | Personal profile & comparison |
What SIAQ measures
The Smell Imagery Ability Questionnaire quantifies how vividly people can imagine odors—used in chemosensory science and memory research where scent imagery matters.
Is low smell imagery normal?
In Imagination Index population data, olfactory imagery averages ~42/100—among the lowest of the six senses. Many people report weak or absent smell imagination without any disorder. SIAQ and our olfactory dimension both help distinguish 'normal low' from sense-specific aphantasia.
Related guides
FAQ
Can I still have scent-triggered memories?
Yes. Real odor exposure triggers memory (the Proust effect) without requiring strong voluntary smell imagery.
Sources & further reading
See your Imagery Profile
Free core assessment · about 12 minutes · no credit card required. See your six-sense Imagery Profile and optional percentile ranking.