dyslexia (dĬslĕk´sēə), in psychology, a developmental disability in reading or spelling, generally becoming evident in early schooling. To a dyslexic, letters and words may appear reversed, e.g., d seen as b or was seen as saw. Many dyslexics never learn to read or write effectively, although they tend to show above average intelligence in other areas. With the aid of computerized brain scans such as positron emission tomography (PET), recent studies have offered strong evidence that dyslexia is located in the brain. Damage to the brain can cause a reading disability similar to dyslexia, known as acquired dyslexia or alexia.

The Columbia Encyclopedia, 6th ed. Copyright© 2015, The Columbia University Press.

Dyslexia: Selected full-text books and articles

Dyslexia: A Practitioner's Handbook By Gavin Reid Wiley, 2003 (3rd edition)
Essentials of Dyslexia Assessment and Intervention By Nancy Mather; Barbara J. Wendling Wiley, 2012
Dyslexia in the Workplace: An Introductory Guide By Diana Bartlett; Sylvia Moody; Katherine Kindersley Wiley-Blackwell, 2010 (2nd edition)
Dyslexia and Alternative Therapies By Maria Chivers Jessica Kingsley, 2006
Day-to-Day Dyslexia in the Classroom By Joy Pollock; Elisabeth Waller; Rody Politt RoutledgeFalmer, 2004 (2nd edition)
What Educators Really Believe about Dyslexia By Wadlington, Elizabeth M.; Wadlington, Patrick L Reading Improvement, Vol. 42, No. 1, Spring 2005
Children at Risk of Dyslexia: Early Identification and Intervention By Bogdanowicz, Marta Psychology Science, Vol. 45, January 1, 2003
Adult Dyslexia: A Guide for the Workplace By Gary Fitzgibbon; Brian O'Connor Wiley, 2002
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