You are conducting an experiment in which participants are asked to focus intensely on the black star in the center of the screen. A small blue triangle is flashed for a moment in the right top corner. The failure of some of the participants to see the small blue triangle on the screen illustrates
A) difference threshold.
B) retinal disparity.
C) inattentional blindness.
D) an apparent-distance illusion.

Question

Quizplus · Accepted Answer

Inattentional blindness refers to the failure to notice a fully visible but unexpected object because attention was engaged on another task, object, or event. In this experiment, participants focusing on the black star and not noticing the blue triangle exemplifies this phenomenon.

You Are Conducting an Experiment in Which Participants Are Asked