Study
Observational learning in Octopus vulgaris
Fiorito, Graziano; Scotto, Pietro
Science, 1992
Untrained octopuses watched a trained demonstrator octopus choose between a red and a white ball, then were tested on the same choice themselves.
- Studied in
- Octopus vulgaris
- Sample size
- 44 observer octopuses across conditions
Observers tended to choose the same ball as the demonstrator, after only a few observations.
What it means
The authors' reading, and ours. Where they differ, that difference is the point.
How the authors put it
Octopuses can learn by watching another individual, a capacity previously attributed mainly to vertebrates.
How NatureHQ reads it
A landmark paper that has aged into a cautionary one. Later attempts to replicate observational learning in octopuses have had mixed results, and the isolated, largely non-social life of *Octopus vulgaris* makes social learning an odd fit ecologically. NatureHQ records it as an influential early finding whose status is unsettled — which is more useful to a reader than either dropping it or repeating it as fact.
- Replication attempts have been inconsistent.
- Simpler explanations, such as local enhancement drawing attention to a location, are hard to exclude.
- The species is not notably social, which makes the ability difficult to account for.
failed replication
Subsequent work has not consistently reproduced observational learning in octopuses, and the original result is not treated as settled within the field.
What this study is used for on NatureHQ
One study can inform several subjects. Here is everywhere this one is cited.
Published by: American Association for the Advancement of SciencePublished in Science or Science Advances (AAAS).
doi.org/10.1126/science.256.5056.545
This reference was resolved automatically against Crossref and OpenAlex on 2026-08-11.
NatureHQ summarises research in its own words and does not reproduce published text. Reviewed 2026-08-09.