A teacher showed 30 students the Müller-Lyer illusion: two lines of equal length, one with arrowheads pointing outwards and one with arrowheads pointing inwards. 24 of the students said the line with outward-pointing arrowheads was longer.
Calculate the percentage of students who said the line with outward-pointing arrowheads was longer. Show your workings.
66 exam-style questions on Oxford AQA IGCSE Psychology 1.2 Perception, covering 1.2.1 Sensation versus perception, 1.2.2 Monocular depth cues, 1.2.3 Binocular depth cues, 1.2.4 Gibson's direct theory of perception, 1.2.5 Motion parallax, 1.2.6 Explanations for visual illusions, 1.2.7 Examples of visual illusions, 1.2.8 Gregory's constructivist theory, 1.2.9 Factors affecting perception, and 1.2.10 Studies of factors affecting perception. Each one has a worked solution and a mark scheme showing where the marks go.