Many so-called UFOs may actually be caused by __________.
A) the Müller-Lyer illusion
B) the Ebbinghaus illusion
C) faulty monocular cues
D) the autokinetic effect

Question

Quizplus · Accepted Answer

The autokinetic effect can cause stationary lights to appear to move, which might explain some UFO sightings. This psychological phenomenon occurs in dark environments where a stationary light appears to move because of small involuntary eye movements.

Many So-Called UFOs May Actually Be Caused by __________