Two studies involving 215 subjects tested the hypothesis that orthographic coding bypasses phonological coding after the early stages of reading or spelling. It was found that nondyslexics continue to develop phonological coding skill until adulthood and rely on it for reading and spelling to a significantly greater extent than do dyslexics.…

Commonalities and differences in the processing mechanism of analytic reading in English and Chinese orthography are compared. Although the phonological processing route is more prominent in English and the morphological route in Chinese, certain processing routes may be implicated in reading disorders. (Author/DB)

Because visual short-term memory deficits are common in children with reading problems, a series of experiments were reviewed which examined the role of phonological processes in short-term memory. Results suggest that both developmental and individual differences in verbal memory span are related to efficient phonological processes. (Author/DB)

This commentary reviews forthcoming articles on the scientific study of dyslexia, genetic and neurophysiological aspects of dyslexia, cross-linguistic aspects of literacy development and dyslexia, and theory-based practice. It concludes that educators should continue to strive to promote theory-based research and evidence-based practice to achieve…

A twin study involving 808 children with reading disability (RD) and 455 children with phonological disorder (PD) found each were heritable on their own. Further, even when correcting for RD, the two disorders were found to be co-heritable, indicating co-familiarity is at least partially driven by genetic influences. (Contains references.)…

This article presents a theoretical overview at the cognitive level of the role of phonological awareness in reading development and developmental dyslexia across languages. It is argued that the primary deficit in developmental dyslexia in all languages lies in representing speech sounds: a deficit in phonological representation. (Contains…

Phonological awareness is explored as a process for studying the cognitive deficits of dyslexic children without undermining the assumption of specificity. Discussed are the operation of Matthew effects, the importance of strict psychometric criteria in dyslexia definitions, and recognition that dyslexia represents an arbitrary criterion in a…

The paper discusses problems with traditional definitions of dyslexia and reviews research that suggests a more comprehensive definition, viewing dyslexia as a developmental language disorder that involves a deficit in phonological processing. The disorder is seen as manifesting itself in various phonological difficulties as well as in a specific…

This paper proposes that foreign-language learning problems result from difficulties with native-language learning. Research evidence is summarized showing that good and poor foreign-language learners exhibit significantly different levels of native-language skill and phonological processing ability. Potential challenges to this hypothesis are…

This paper argues that the ability to rapidly compare phonemes is a primary sensory-cognitive function underlying self-correction in word recognition and spelling and thus, indirectly, reading comprehension. Such phonological defects can be addressed both preventively and remedially using procedures that are fundamentally different from typical…

This study evaluated the effectiveness of the Auditory Discrimination in Depth (ADD) Program in remediating the analytic decoding deficits of 10 students (ages 93 to 154 months) with severe dyslexia. Subjects received an average of 65 hours of training. Results indicated significant gains in phonological awareness and analytic decoding skills.…

This study of 281 individuals (ages 6 to adult) with reading difficulties who received 80 hours of intensive instruction in the Auditory Discrimination in Depth Program found that subjects exhibited significant gains on measures of phonological awareness, sound/symbol connections, word identification, spelling, and decoding in context. (Author/JDD)

Thirty-five children with dyslexia (mean ages 8, 12, and 16 years) and normally achieving children matched for IQ and age were tested on basic skills. Subjects' performance on such tasks as phoneme segmentation, picture naming speed, tachistoscopic word recognition, speeded bead threading, and balance showed less complete automatization than did…

If spelling errors are classified simply as auditory or visual, or as phonetically accurate or inaccurate, manifestations of both developmental phenomena and possible linguistic process deficits in spelling may be overlooked or misinterpreted. Spelling errors may yield useful information about specific language disabilities through a phonological…

Originally given as a speech, this paper describes the double-deficit hypothesis of reading disabilities, which proposes that developmental dyslexia is due to deficits in the phonological system and in processes underlying naming speed. The paper also reports on an innovative reading fluency intervention program based on the double-deficit…