Psychology 0044 -- Laboratory in Perception
This Time
Course mechanics
Measuring percepts
Reading
Stevens, “The direct estimation …”
Windows FAQs
Introductory Lab
Checklist and Matlab/Toolbox tricks
Click for syllabus
Linear perspective
Linear perspective
Page 152 (257)
Copyright © 2002 Wadsworth Group. Wadsworth is an imprint of the
Wadsworth Group, a division of Thomson Learning
Optical Illusions of Distance
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Geometric Perspective and Size
Constancy
Geometric Perspective and Size
Constancy
Geometric Perspective and Size
Constancy
Geometric Perspective and Size
Constancy
Geometric Perspective and Size
Constancy
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Geometric Perspective and Size
Constancy
Size
constancy
Ames room
Ames room
The Ames Room
Page 153 (255, Fig. 7.45)
Copyright © 2002 Wadsworth Group. Wadsworth is an imprint of the
Wadsworth Group, a division of Thomson Learning
The Müller-Lyer Illusion
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Psychophysical Scaling
• What is a sensory scale?
• Fechner vs. Stevens
• Stevens’ techniques
– Magnitude estimation
– Magnitude production
– Cross-modal matching
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• The typical result: Power function S = aI
where S is the sensory scale value, and I is the
physical intensity, and a and ! are parameters.
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Intro Lab
Push for Excel
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Windows
Matlab
Modifying the experiment
Running the experiment
Saving your data into Excel
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