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Book Cover
Author Legge, Gordon E

Title Psychophysics of Reading in Normal and Low Vision
Published Boca Raton : Chapman and Hall/CRC, 2006


Description 1 online resource (246 pages)
Contents Cover; Half Title; Title Page; Copyright Page; Contents; Preface and Acknowledgments; 1 Vision and Reading; Box 1.1 Complete Citations for the 20 Articles in the Psychophysics of Reading Series; Box 1.2 Citations to M.A. Tinker's Classic Series of 13 Articles; 2 Measuring Reading Speed; 2.1 Three Methods for Measuring Reading Speed; Drifting Text Method; RSVP Method; Flashcard Method; Clinical Potential of the Flashcard Method; 2.2 Subtleties in the Measurement of Reading Speed; Text Difficulty, Word Length, and Carver's Metric; Instructions to Participants
Oral and Silent Reading of Short and Long PassagesContext Effects; 2.3 How Fast Do People Read?; Reading Speeds of Normally Sighted People; Speed Reading; Box 2.1 Role of the Magnocellular Pathway in Reading and Dyslexia; Effect of Age on Normal Reading Speed; Low-Vision Reading Speed; Auditory and Tactile Reading Speed; Box 2.2 Characteristics of Braille; Is Reading Speed Limited by Motor Movements, Sensory Coding, or Cognition?; 2.4 Comparison of Reading Speed to Other Measures of Reading Performance; Comprehension; Eye Movements; Reading Accuracy, Visual Search, and Visual Comfort
3 Visual Mechanisms in Reading3.1 Two Important Properties of Letters in Text: Contrast and Size; Contrast Definitions; Size Definitions; 3.2 The Effect of Character Size in Normal and Low Vision; Normal Vision; Low Vision; 3.3 Contrast Effects in Normal and Low Vision; Normal Vision; Low Vision; 3.4 The CSF Model of Reading; 3.5 The Spatial-Frequency Channel Model of Reading; 3.6 Reading with Peripheral Vision; 3.7 The Visual Span; Box 3.1 Historical Antecedents of the Visual Span; Two Methods for Measuring the Visual Span; The Impact of Contrast and Character Size on the Visual Span
Three Determinants of the Size of the Visual Span3.8 Central-Field Loss and Reading Difficulty; Macular Degeneration and Central-Field Loss; Central-Field Loss Usually Means Slow Reading; Why Do People With Central Scotomas Read Slowly?; Implications for Rehabilitation; 3.9 Linking Letter Recognition to Reading Speed; A Model Based on Letter Recognition; Word Shape; Box 3.2 Is There a Visual Word Form Area?; Bottom-Up and Top-Down Processes in Word Recognition; Box 3.3 Dual-Route Theory; 3.10 Summary and Conclusions; 4 Displaying Text; 4.1 Text Legibility; Definition
Box 4.1 Fonts for Highway SignsLegibility Metric; 4.2 Font Effects in Normal and Low Vision; Influence of Font Design; Influence of Spacing; Fonts for Low vision; 4.3 Display Resolution; Effects of Sample Density and Spatial-Frequency Bandwidth; Implications for Text Displays; Defocused Text; Reading and Myopia; Sampled Displays and Low Vision; Box 4.2 Pixelized Vision as a Prosthetic for Blind People; 4.4 The Window-Size Effect and Page Navigation; Relation to Visual Span; 4.5 Navigating Through Text; Eye Movements in Reading; Small Displays; 4.6 Navigating Through Text with Magnifiers
Notes Using Large Print or Short Viewing Distance to Magnify
Print version record
Subject Low vision.
Vision disorders.
Weber-Fechner law.
Visual acuity.
Vision, Low -- complications
Differential Threshold
Visual Acuity
Vision, Low
Vision Disorders
Weber-Fechner law
Visual acuity
Low vision
Vision disorders
Form Electronic book
ISBN 9781482269482