Monkeys and Humans Share Geometric Intuition
A new study reveals that primates and humans both recognize abstract geometric shapes.
Updated on Oct. 2, 2026 in Mathematics
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Researchers have discovered that both humans and rhesus macaques share the ability to identify geometric qualities such as symmetry and right angles. The study confirms that geometric intuition is not unique to the human species.
Why it matters
Understanding if geometric intuition is universal helps researchers determine whether these cognitive abilities evolved independently or are shared among primates. This distinction provides key insights into the biological origins of mathematical thought.
The study utilized matching tasks with 8 rhesus macaques and baboons, alongside human participants, to evaluate the recognition of geometric qualities like parallel sides and right angles. Researchers analyzed results by manipulating shape similarity to identify rules.
The players
Carnegie Mellon University
Researchers at this institution conducted the study regarding geometric shape recognition.
Proceedings of the National Academy of Sciences
This is a peer-reviewed multidisciplinary scientific journal that published the research findings.
The details
Participants performed shape matching tasks on screens to select specific figures from a larger group. Monkeys, preschoolers, and adults received different forms of positive reinforcement, including treats, stickers, and verbal affirmation, for accurate matches.
Timeline
The study was published in the Proceedings of the National Academy of Sciences in October 2026.
The Big Picture
This research advances the comparative cognition research programs at Carnegie Mellon University by demonstrating that abstract geometric logic is a shared primate trait. The findings suggest that geometric intuition is an ancestral ability rather than a uniquely human innovation.
This discovery could influence how scientists approach the development of artificial intelligence by modeling human and primate geometric intuition. It provides a biological baseline for testing how complex spatial reasoning can be applied to non-human intelligence systems.
The takeaway
The research highlights that the ability to perceive symmetry and angles is deeply rooted in the primate brain. These findings encourage further investigation into how other complex cognitive tasks might be shared across the animal kingdom.
Further reading
Learn more about the study of cognitive patterns in the Mathematics section.
Source note: This article includes information reported by The Star.
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