Abstract
A series of experiments provided converging support for the hypothesis
that action preparation biases
selective attention to action-congruent object features. When visual
transients are masked in so-called
change-blindness scenes, viewers are blind to substantial changes
between 2 otherwise identical pictures
that flick back and forth. The authors report data in which participants
planned a grasp prior to the onset
of a change-blindness scene in which 1 of 12 objects changed identity.
Change blindness was substantially
reduced for grasp-congruent objects (e.g., planning a whole-hand grasp
reduced change blindness
to a changing apple). A series of follow-up experiments ruled out
an alternative explanation that this
reduction had resulted from a labeling or strategizing of responses
and provided converging support that
the effect genuinely arose from grasp planning.
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