We've Been Testing For Consciousness Wrong

Professor Masanori Kohda has been studying fish for 3 decades. His groundbreaking paper in 2019 showed that fish are capable of passing the famous mirror test. But more importantly, his research shows that how we have tried to test for consciousness over the past half century may be wrong.

In this video, we look at how he came to these conclusions.

#research #science #nature #fish #animalbehavior #animalintelligence
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Sources:

https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.3000021 - 2019 study. (Initial evidence of passing mark test)
https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.3001529 - 2022 study (Followup mark test with greater sample size, but also blue/green mark)
https://www.pnas.org/doi/10.1073/pnas.2208420120 - 2023 Study (Photo-recognition study)
https://www.nature.com/articles/s41598-024-70138-7#author-information - 2024 study (Mirror + Body size study)
https://www.nature.com/articles/s41598-025-25837-0?error=server_error#additional-information - 2025 Study (Rapid recognition)
https://pmc.ncbi.nlm.nih.gov/articles/PMC9334443/
https://pmc.ncbi.nlm.nih.gov/articles/PMC6304147/
https://www.sciencedirect.com/science/article/abs/pii/002209658690038X

Lecture from Professor Kohda:
https://www.youtube.com/watch?v=4DnMwVcdWh0u0026list=WLu0026index=15u0026t=1136s

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