Optical illusions reveal how your brain guesses reality.

Geodesic domes distribute stress across all members, making them structurally efficient.

Fact #5783 · Psychology

IQ tends to remain relatively stable throughout adulthood.

Fact #2969 · Psychology

REM sleep is when most vivid dreaming occurs — the brain is nearly as active as when awake.

Fact #6668 · Psychology

The anchoring effect causes people to rely heavily on the first piece of information they hear.

Fact #3027 · Psychology

About 68% of people have an IQ between 85 and 115.

Fact #2967 · Psychology

The Stanford prison experiment explored the psychological effects of perceived power.

Fact #992 · Psychology

The planning fallacy causes people to underestimate how long tasks will take — even knowing about the bias.

Fact #6304 · Psychology

The Ames room illusion distorts perceived size and distance.

Fact #1490 · Psychology