Melissa M. Kibbe, Aimee E. Stahl

An object's categorizability impacts whether infants encode surface features into their object representations

  • Developmental and Educational Psychology
  • Pediatrics, Perinatology and Child Health
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AbstractInfants encode the surface features of simple, unfamiliar objects (e.g., red triangle) and the categorical identities of familiar, categorizable objects (e.g., car) into their representations of these objects. We asked whether 16–18‐month‐olds ignore non‐diagnostic surface features (e.g., color) in favor of encoding an object's categorical identity (e.g., car) when objects are from familiar categories. In Experiment 1 (n = 18), we hid a categorizable object inside an opaque box. In No Switch trials, infants retrieved the object that was hidden. In Switch trials, infants retrieved a different object: an object from a different category (Between‐Category‐Switch trials) or a different object from the same category (Within‐Category‐Switch trials). We measured infants' subsequent searching in the box. Infants' pattern of searching suggested that only infants who completed a Within‐Category‐Switch trial as their first Switch trial encoded objects' surface features, and an exploratory analysis suggested that infants who completed a Between‐Category‐Switch trial as their first Switch trial only encoded objects' categories. In Experiment 2 (n = 18), we confirmed that these results were due to objects' categorizability. These results suggest infants may tailor the way they encode categorizable objects depending on which object dimensions are perceived to be task relevant.

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