Infants' sensitivity to kinetic information for three-dimensional object shape

Martha E. Arterberry, Albert Yonas

Research output: Contribution to journalArticlepeer-review

49 Scopus citations


Infant sensitivity to kinetic information specifying three-dimensional object shape was assessed using computer-generated random-dot displays. Four-month-old infants were habituated to displays of an object oscillating about two different axes on alternating trials. Following habituation, the infants were tested for recovery from habituation to a display of the same object and a novel object. Both test displays employed a new axis of rotation. The infants generalized habituation to the same object and increased their looking to the new object. These results provide evidence that infants are sensitive to motion-carried information specifying three-dimensional object shape, since the random-dot displays minimized static information that differentiated the two objects. These findings suggest that, at least by 4 months of age, infants can detect subtle differences in shape from purely kinetic information.

Original languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalPerception & Psychophysics
Issue number1
StatePublished - Jan 1988


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