We comment on the complexity of cognitive mechanisms and conclude by highlighting evolutionary and developmental continuity, suggesting that an inclination toward hierarchical reasoning may not be uniquely human, but rather a cognitive ability that may emerge gradually across age and species.

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Key Finding 2: Context & Complexity Matter. Adults consistently relied on hierarchical mechanisms. Children and non-human animals showed graded performance influenced by task demands, working memory, and stimulus type.

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🧠 Is hierarchical reasoning uniquely human, or do we share this capacity across species and development? Our new paper in Cognition, "Flexibility of hierarchical reasoning across age and species," explores how humans and non-humans flexibly deploy recursive strategies! 🧵👇 doi.org/10.1016/j.co...

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🚨 Preprint alert! 👶🧠🌊 "The Emergence of a Distinction between Things and Stuff" osf.io/preprints/ps... So excited to share my first infant study, with the wonderful Sanghee Song and Liz Spelke.🎉 Do babies expect sand to behave differently from solid objects? 🧵1/5

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MY son summed him up a while back bsky.app/profile/kevi...

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