Stimulus Attributes and Reaction Times
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Questions and Answers

What were the results of the experiment on detecting orientation oddballs with set-size 12?

  • The reaction time remained the same regardless of the number of distractor items.
  • The reaction time decreased with the number of distractor items. (correct)
  • The reaction time increased with the number of distractor items.
  • The reaction time varied depending on the visibility of the distractor items.

    • What did Braun and Sagi find when testing arrays of items for discriminating between the letters L and T?

  • Performance was not affected by the presence of distractor items. (correct)
  • Performance varied depending on the contrast of the items.
  • Performance was better for longer Gabor duration.
  • Performance was impaired in highly practiced subjects.

    • What effect did extensive practice have on the observable attentional effects in the L/T discrimination task?

  • Extensive practice had no effect on the attentional effects.
  • Extensive practice increased the attentional effects.
  • Extensive practice eliminated the attentional effects completely.
  • Extensive practice reduced the attentional effects but did not eliminate them. (correct)

    • What do the results of the experiments suggest about visual feature search tasks?

    <p>Visual feature search tasks are impaired by a demanding attentional load.</p> Signup and view all the answers

    What does the present study argue against?

    <p>The existence of a separate privileged category of preattentive perception.</p> Signup and view all the answers

    The reaction time for detecting orientation oddballs increases with the number of distractor items.

    <p>False</p> Signup and view all the answers

    The perception of an orientation difference within a two-dimensional array of items requires attentional resources.

    <p>True</p> Signup and view all the answers

    Extensive practice can eliminate the observable attentional effects in visual feature search tasks.

    <p>False</p> Signup and view all the answers

    The results of Mack et al.'s study suggest that unexpected and irrelevant objects in the visual field are always noticed.

    <p>False</p> Signup and view all the answers

    The present study challenges the idea that preattentive processing can lead directly to perceptual report.

    <p>True</p> Signup and view all the answers

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