Challenge Your Senses

General Knowledge · 10 questions

Pit your friends against the little tricks of sight, sound, and the brain. Who can spot the perceptual traps fastest.

Answer each question first, then check with “Show the answer”. You can also play the same quiz in the Quizera app by searching for it in Explore, as a live game, a test or flashcards.

1. In the Müller-Lyer drawing, what are the actual lengths of the two lines with oppositely pointing fins?

   1. A 1:4 ratio
   2. A 1:2 ratio
   3. A 1:3 ratio
   4. Equal lengths
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   D) Equal lengths

2. After staring at a red patch, which complementary color usually appears on a white surface?

   1. Orange
   2. Cyan
   3. Purple
   4. Yellow
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   B) Cyan

3. When visible lip movements conflict with the speech sound, how might a listener perceive it?

   1. A fused new syllable
   2. Only the heard syllable
   3. Silence
   4. Only the visible syllable
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   A) A fused new syllable

4. In Rubin's famous drawing, which two images can viewers alternate between seeing?

   1. A goblet and two hands
   2. A tree and two birds
   3. A bridge and two arches
   4. A vase and two facing profiles
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   D) A vase and two facing profiles

5. Which perceived property of a surface can surrounding shadows and grey tones affect?

   1. Its physical position
   2. Its perceived brightness
   3. Its surface texture
   4. Its actual color
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   B) Its perceived brightness

6. If two brief sounds accompany a single flash of light, how many flashes might a person perceive?

   1. One flash
   2. Three flashes
   3. No flashes
   4. Two flashes
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   D) Two flashes

7. When a visible source and a sound at different locations are presented together, where may the sound seem to come from?

   1. Behind the listener
   2. The sound device's location
   3. The visible source's location
   4. Opposite the visible source
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   C) The visible source's location

8. Which personal cue may especially capture attention when someone is focused on another conversation in a crowd?

   1. A distant clock's ticking
   2. Their own name
   3. An unfamiliar address
   4. A random syllable
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   B) Their own name

9. In the classic rubber-hand illusion experiment, where is the real hand kept while stroked in sync with the artificial hand?

   1. In cold water
   2. In plain view
   3. Out of sight
   4. Under bright light
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   C) Out of sight

10. Which information can the brain mainly use to fill in a missing pattern at the blind spot?

    1. Surrounding visual information
    2. Skin touch information
    3. Surrounding sound information
    4. Nasal smell information
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    A) Surrounding visual information