Glossary

Search results

Perceptual Span(also: Reading Span, Visual Span)

The area of text around a fixation point from which useful information can be extracted during reading. Research using eye-tracking has shown that skilled deaf readers have a larger perceptual span than hearing readers — up to 18 letter spaces compared to 14 for hearing readers…

Phoneme-Grapheme Mapping(also: Phoneme-Grapheme Correspondence, Alphabetic Principle)

The relationship between speech sounds (phonemes) and their written representations (graphemes), which is foundational to reading in alphabetic writing systems. Mastering phoneme-grapheme mapping — the alphabetic principle — is essential for fluent word recognition and a key…

Phonological Dyslexia

A subtype of dyslexia characterized by difficulty with sound-based word decoding, including problems with orthographically similar words (e.g., confusing "addition" and "audition"), number and letter recognition, and errors related to word substitutions, additions, or omissions.…

Polysemy(also: Polysemous Words)

The property of a word having multiple related meanings or senses. For example, the word "bank" can refer to a financial institution or the edge of a river. Polysemy creates particular challenges for text simplification and accessibility tools because choosing an appropriate…

Print Disabilities(also: Print Disability, Print Impairment)

A broad term encompassing any condition that prevents a person from effectively reading standard printed text. Print disabilities include blindness and low vision, but also extend to learning disabilities such as dyslexia, physical disabilities that prevent holding or…

Print Disability(also: Print Impairment, Print-related Disability, Print-related Disabilities)

A condition that prevents a person from effectively reading conventional printed material due to visual, physical, perceptual, developmental, cognitive, or learning disabilities. Print disabilities include blindness, low vision, dyslexia, and physical conditions that prevent…

Print Disability(also: Print Impairment)

A condition that prevents a person from effectively reading standard printed material. Print disabilities include blindness, low vision, dyslexia, and physical disabilities that make it difficult to hold or manipulate printed books. People with print disabilities rely on…

7 results.