ArticleCurrent zoology2020
Perception of the Müller-Lyer illusion in guppies.
Article in Current zoology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
8 citing papers in PubMed, 16 citations in OpenAlex.
- Examination of hierarchical form perception in African grey parrots (Psittacus erithacus).Learning & behavior · 2025Article
- The influence of visual illusion perception on numerosity estimation could be evolutionarily conserved: exploring the numerical Delboeuf illusion in humans (Homo sapiens) and fish (Poecilia reticulata).Animal cognition · 2023Article
- Guppies (Biology letters · 2022Article
- The Challenge of Illusory Perception of Animals: The Impact of Methodological Variability in Cross-Species Investigation.Animals : an open access journal from MDPI · 2021Review
- Automated Operant Conditioning Devices for Fish. Do They Work?Animals : an open access journal from MDPI · 2021Article
- Susceptibility to Size Visual Illusions in a Non-Primate Mammal (Animals : an open access journal from MDPI · 2020Article
- Two halves are less than the whole: Evidence of a length bisection bias in fish (Poecilia reticulata).PloS one · 2020Article
- Forest before the trees in the aquatic world: global and local processing in teleost fishes.PeerJ · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The Müller-Lyer illusion is a well-known distortion illusion that occurs when the spatial arrangement of inducers (i.e., inwards- or outwards-pointing arrowheads) influences a line's perceived relative length. To date, this illusion has been reported in several animal species but only in 1 teleost fish (i.e., redtail splitfins
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.