Mack and Rock (1998) Asked Participants to Maintain Fixation on a Central

question 30

Multiple Choice

Mack and Rock (1998) asked participants to maintain fixation on a central point.They then saw a large cross somewhere in the parafoveal region.The participants' task was to determine if the horizontal or vertical lines of the cross were larger.The researchers found that ______.

• A)reaction time in the task slowed when the horizontal lines and vertical lines were not perpendicular to each other
• B)reaction time was faster when the stimuli were presented more dimly than when the stimuli were presented more brightly
• C)attention to the horizontal lines inhibited perception of the vertical lines
• D)a majority of the participants did not report seeing an introduced diamond, even though it was presented in the fovea

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