Cutaneous Rabbit Illusion
Updated 2026-08-05
INTRODUCTION
English translation pending.
CORE DEFINITION
Demonstrated by Frank Geldard and Carl Sherrick, the illusion arises when a few rapid taps are delivered at one site, such as the wrist, followed by a few at another site, such as the elbow. Participants report taps distributed evenly along the path between the two sites, including locations never stimulated. The core claim is that perception fills in missing intermediate positions rather than reporting only actual stimulation. The qualification is that the effect depends on precise timing and spacing.
SCAFFOLDING EFFECT
Reduce cognitive load
- Use Gap Awareness: Notice when you supply only endpoints and your audience invents the middle. - Use Sequence Control: Order and space information so the inferred middle matches reality. - Use Fill Testing: Check what a reader or listener assumed happened between two stated facts.
Anchor fast decisions
The perceptual system expects continuous motion and treats discrete stimuli as samples of a single trajectory, so it interpolates positions between them rather than reporting them as separate events. Because interpolation happens automatically and below awareness, the constructed middle feels as real as the actual taps. The same mechanism operates on any sparse sequence, which is why two data points can produce a confident but unwarranted narrative of what lies between them.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Cutaneous_rabbit_illusionverified
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