A coin is slowly rotated in front of Leo. The image of the coin on his retina becomes more and more oval, but he continues to perceive the coin as circular.
Explain why this is an example of shape constancy rather than a visual illusion.
52 exam-style questions on Edexcel GCSE Psychology 8.1 Perception, covering 8.1.1 Depth cues, illusions and constancies, 8.1.2 Direct Theory of Perception (Gibson, 1996), 8.1.3 Constructivist Theory of Perception (Gregory, 1970), and 8.1.4 Effects on perceptual set. Each one has a worked solution and a mark scheme showing where the marks go.