Development of sensitivity to binocular information for the approach of an object

Albert Yonas, Charles Oberg, Anthony Norcia

    Research output: Contribution to journalArticlepeer-review

    20 Scopus citations


    To study the development of responsiveness to binocular information, a display specifying an object approaching on a collision course was presented to 12 14- and 12 20-wk-old infants. Responses to the stereoscopic collision display were compared to behavior evoked by a control display that lacked stereoscopic depth information. Videotape recordings were analyzed for evidence of convergence, avoidance behavior, and reaching. The head alignment of both the 14- and 20-wk-olds suggests that their eyes were converging on the stereoscopic display. However, only the 20-wk-old Ss reached for the virtual object as it approached and reacted with defensive behavior at the time of collision, indicating sensitivity to binocular depth information. (15 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved).

    Original languageEnglish (US)
    Pages (from-to)147-152
    Number of pages6
    JournalDevelopmental psychology
    Issue number2
    StatePublished - Mar 1978


    • stereoscopic collision display vs display lacking stereoscopic depth information, development of sensitivity to binocular information for approach of object, 14 & 20 wk olds


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