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Updated: May 8, 2026

Experience is Instrumental in Tuning a Link Between Language and Cognition: Evidence from 6- to 7- Month-Old Infants' Object Categorization
Published on: April 19, 2017
Young infants have biological expectations about animals
Peipei Setoh1, Di Wu, Renée Baillargeon
1Department of Psychology, University of Illinois, Champaign, IL 61820.
Eight-month-old infants expect animals to have insides, demonstrating early biological reasoning. This finding suggests infants possess innate concepts about animal properties, influencing future biological understanding.
Area of Science:
- Developmental psychology
- Cognitive science
- Animal cognition
Background:
- The origins of biological reasoning in infants are debated.
- It is unclear if children develop biological concepts from physical/psychological reasoning or possess innate biological properties.
Purpose of the Study:
- To investigate whether 8-month-old infants expect animals to have insides.
- To explore the developmental origins of the concept of 'animal' in infants.
Main Methods:
- Infants were presented with novel objects identified as animals.
- Violation detection was measured when objects were revealed to be hollow.
- Object properties like self-propulsion, agentiveness, and furriness were manipulated.
Main Results:
- Infants detected violations when self-propelled, agentive objects were hollow.
- Infants detected violations when self-propelled, furry objects were hollow or rattled.
- No violation detection occurred for objects lacking these properties.
Conclusions:
- Eight-month-old infants expect animals to possess internal structures.
- This expectation may form a foundation for advanced biological knowledge development.
- Infants may endow animals with biological properties from a young age.
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