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World 4 · The Room That Shrinks People · 9 min · PRO

Ponzo and Müller-Lyer

Illusions that survive being explained

PRO · Illusion Lab

World 4: The Room That Shrinks People is part of PRO

The first world of Illusion Lab is free. PRO opens the other 24 lessons in 6 worlds — simulations, quizzes and all.

  • Size constancy
  • The Ames room
  • Expectation: hollow masks and faces everywhere
  • Gestalt: the whole before the parts
  • Figure and ground: Rubin and Necker
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  • All 60 labs — every world, every lesson
  • Practice exams and certificates

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← The Ames roomExpectation: hollow masks and faces everywhere →

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