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Eleven-month-old infants infer differences in the hardness of object surfaces from observation of penetration events

Identifieur interne : 000202 ( Pmc/Corpus ); précédent : 000201; suivant : 000203

Eleven-month-old infants infer differences in the hardness of object surfaces from observation of penetration events

Auteurs : Tomoko Imura ; Tomohiro Masuda ; Nobu Shirai ; Yuji Wada

Source :

RBID : PMC:4522514

Abstract

Previous studies have shown different developmental trajectories for object recognition of solid and non-solid objects. However, there is no evidence as to whether infants have expectations regarding certain attributes of objects, such as surface hardness, in the absence of tactile information. In the present study, we examined infants’ perception of the hardness of object surfaces from visually presented penetration events using the familiarization–novelty preference procedure. Experiment 1 showed that by 11 months old infants distinguished a relatively soft surface from a crusty surface based on changes in the velocity of a moving object as the moving object penetrated the surface of the target object. Experiment 2 ruled out the possibility that infants were merely sensitive to differences in the velocity changes in the stimuli.


Url:
DOI: 10.3389/fpsyg.2015.01005
PubMed: 26283980
PubMed Central: 4522514

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