A psychology professor decides to play a practical joke on a colleague in the history department. While the historian is giving a lecture on the first day of class, the psychology professor interrupts and asks to speak with her outside the classroom. While they are conversing, all of the students leave through a back door and are replaced with a completely new group of students. Upon returning, the history professor continues her lecture without noticing that the students are different, illustrating:

Question

Quizplus · Accepted Answer

This scenario illustrates change blindness, which is a phenomenon where a person does not notice a significant change in their environment, such as the entire class of students being replaced.

A Psychology Professor Decides to Play a Practical Joke on a Colleague