As participants in a study by Simon and Chabris (1999) counted passes of a basketball on a video they watched, they failed to see a person walking around in a gorilla suit. This is an example of:
A) a hallucination.
B) inattentional blindness.
C) a visual illusion.
D) visual pareidolia.

Question

Quizplus · Accepted Answer

This is an example of inattentional blindness, where participants were so focused on counting the passes that they failed to notice the unexpected stimulus of a person in a gorilla suit walking around.

As Participants in a Study by Simon and Chabris (1999)