Lecture2-StudyingCognition - Lecture 2: Studying Cognition...

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1 Lecture 2: Studying Cognition Fall 2007 Prof. Lombrozo Overview of today’s class: 1. Course themes (from Lecture #1) 2. Historical background 3. A computational approach to the mind 4. Marr’s levels of explanation 1.2 Themes • We are incredibly smart. • We are incredibly dumb. (Or it can sometimes seem that way) • The ways in which the mind errs provide insight into how the mind works. 1.3 The Muller-Lyer illusion Observation 1: The 2D images can be interpreted as 3D.
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2 1.4 The Muller-Lyer illusion Observation 2: “Out” configurations often farther away than “in” 1.5 Perceptual illusions 1. Interpret as 3D image. 2. Assume “out” configuration farther away. 3. If 2 images project same size on retina, farther is larger. 4. Therefore, “out” line is longer than “in” line. 1.6 Hermann von Helmholtz (1821-1894) “It is just those cases that are not in accordance with reality which are particularly instructive for discovering the laws of the processes by which normal perception originates.”
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3 1.7 Themes 2.8 How can we study cognition? The perception
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Lecture2-StudyingCognition - Lecture 2: Studying Cognition...

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