Lateral interception I: operative optical variables, attunement and calibration

D.M. Jacobs, C.F. Michaels

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    Abstract

    J. J. Gibson (1966, 1979) suggested that improvement in perception and action can be attributed in part to changes in which variable is attended to. Such reattunement has been demonstrated with observers making judgments in response to simulations. The present study sought attunement changes in the perception of real events and in visually guided action. In 3 experiments, adults judged the passing distance of or attempted to catch balls. Discrete measures and the predictions of a modified required velocity model (e.g., R. J. Bootsma, V. Fayt, F. T. J. M. Zaal, & M. Laurent, 1997) were used to reveal which variables were exploited. Participants differed from each other and, to some extent, changed in the optical variables used, in catching as well as judging. Nevertheless, the changes were much smaller than in previous simulation-judgment studies; calibration was also found to underlie the improvements in performance. Copyright 2006 by the American Psychological Association.
    Original languageEnglish
    Pages (from-to)443-58
    JournalJournal of Experimental Psychology: Human Perception and Performance
    Volume32
    DOIs
    Publication statusPublished - 2006

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