Is the frequency of dyslexic problems among prison inmates higher than in a normal population?

The primary objective of this study was to compare a sample ofprison inmates with the norms obtained for large samples of 12year-old students on tests measuring word decoding skills,reading and spelling abilities. Theoretically, we assumed thatphonological processing deficits are a strong predictor ofdyslexic problems, and thus, only those inmates who did not seemto possess appropriate levels of phonological decoding skillsshould be defined as dyslexics. The results showed that theinmates performed better or at the same level as 12 year-oldstudents on all tasks measuring reading, spelling, and worddecoding skills, and that 4 out of 35 inmates (11%) with Swedishas their native language exhibited phonological decoding skillssubstantially below the average of grade 6 students. Thus, bycomparing the group of inmates with 12 year-old students, and byusing phonological decoding skills as an indicator of reading andwriting disabilities, our conclusion was that the frequency ofpossible dyslexic problems found in a group of prison inmateslooks very much like comparable incidence figures from a generalpopulation.     

大学生结构化英语语音意识干预的有效性

根据语音意识层级结构理论,对大学一年级学生进行为期8周的英语语音意识干预,通过对语音意识听辨测试和单词认读能力测试结果的对比统计分析,发现实验组在英语语音意识水平和单词认读能力方面均得到显著提高.干预后,实验组与控制组的英语语音意识水平出现显著差异.研究证明,结构化语音意识干预可以有效提高大学生的英语语音意识水平和单词...     

The relations of early phonological awareness,rapid‐naming and speed of processing with the development of spelling and reading: a longitudinal examination

Phonological awareness has been found to be strongly related to spelling. Findings on the relations between rapid‐naming and spelling are less consistent and have been suggested to be shared with speed of processing. This study set out to examine these relations in spelling and reading of Hebrew. Children attending the regular educational system were followed longitudinally (N = 70): phonological awareness, rapid‐naming and speed of processing were tested in kindergarten and in grade 1, and spelling and reading were tested in grade 2. Kindergarten and grade 1 rapid‐naming predicted spelling and word reading, and grade 1 phonological awareness predicted spelling, word reading and decoding. Speed of processing was an insignificant predictor. The findings extend the role of phonological awareness in spelling to an orthography with partial phonological representations and concurrently suggest weak relations. The results further suggest a link between rapid‐naming and orthographic knowledge, which may not be explained by shared variance with speed of processing.     

Cognitive and Linguistic Precursors to Early Literacy Achievement in Children With Specific Language Impairment

This study investigated the role of cognitive and language skills as predictors of early literacy skills in children with Specific Language Impairment. A range of cognitive and linguistic skills were assessed in a sample of 137 eight-year-old children with SLI at the beginning of the school year, and 6 months later on word decoding and reading comprehension. The cognitive and linguistic measures revealed four factors that were called language, speech, short-term memory, and phonological awareness. Structural equation modeling showed word decoding to be predicted by speech, short-term memory, and phonological awareness, whereas reading comprehension was predicted by word decoding skills and short-term memory. It can be concluded that in children with SLI variations in early word decoding are mostly determined by speech abilities and short-term memory, and to a lesser extent by phonological awareness. Moreover, reading comprehension turns out to be highly dependent on word decoding and short-term memory.     

Developmental dyslexia in an orthography of intermediate depth: the case of European Portuguese

Fifteen Portuguese children with dyslexia, aged 9–11 years, were compared with reading and chronological age controls with respect to five indicators related to the phonological deficit hypothesis: the effects of lexicality, regularity, and length, implicit and explicit phonological awareness, and rapid naming. The comparison between groups indicates that Portuguese children with dyslexia have a phonological impairment which is revealed by a developmental deficit in implicit phonological awareness and irregular word reading (where younger reading level controls performed better than dyslexics) and by a developmental delay in decoding ability and explicit phonological awareness (where dyslexics matched reading level controls). These results are discussed in relation to the idea that European Portuguese is written in an orthography of intermediate depth.     

Gains From Training in Phonological Awareness in Kindergarten Predict Reading Comprehension in Grade 9

The effects of a kindergarten training program in phonological awareness with 209 Swedish-speaking children were followed up until the end of Grade 9. Initial levels of letter knowledge and phonological awareness were positively associated with the level of decoding skill in Grade 3 but not with its growth afterward. The intervention group performed significantly better in decoding in Grade 3, and the difference was maintained until Grade 6. The trained children also scored higher in Grade 9 reading comprehension. Although the results give empirical support for a connection between early phonological awareness training, later word decoding development, and still later reading comprehension, the theoretical explanation for the link between especially word decoding and reading comprehension is far from clear.     

Morphological awareness, phonological awareness, and reading in English–Arabic bilingual children

The paper reported an exploratory study that tested (a) the relationship between phonological and morphological awareness in English (L1)–Arabic (L2) bilingual children in Canada (N = 43), and (b) the relevance of these skills to word and pseudoword reading accuracy, and to complex word reading fluency. The results showed a significant correlation between phonological awareness in English and in Arabic. However, morphological awareness in the two languages was not correlated. Phonological awareness predicted reading cross-linguistically, but only Arabic morphological awareness predicted word reading in English. Moreover, while both phonological and morphological awareness in English predicted independent unique variance in English word reading, only phonological awareness in Arabic predicted Arabic word reading. Complex-word reading fluency was predicted by morphological awareness within both languages. Similarly, in both languages, phonological awareness was the single factor predicting pseudoword decoding accuracy. The results are discussed in terms of cross-linguistic differences between English and Arabic in orthographic depth and in morphological structure and transparency.     

Predicting individual differences in reading comprehension: a twin study

We examined the Simple View of reading from a behavioral genetic perspective. Two aspects of word decoding (phonological decoding and word recognition), two aspects of oral language skill (listening comprehension and vocabulary), and reading comprehension were assessed in a twin sample at age 9. Using latent factor models, we found that overlap among phonological decoding, word recognition, listening comprehension, vocabulary, and reading comprehension was primarily due to genetic influences. Shared environmental influences accounted for associations among word recognition, listening comprehension, vocabulary, and reading comprehension. Independent of phonological decoding and word recognition, there was a separate genetic link between listening comprehension, vocabulary, and reading comprehension and a specific shared environmental link between vocabulary and reading comprehension. There were no residual genetic or environmental influences on reading comprehension. The findings provide evidence for a genetic basis to the “Simple View” of reading.     

The Contribution of Naming Speed to the Simple View of Reading

The purpose of this study was to investigate whether naming speed makes a contribution to the prediction of reading comprehension, after taking into account the product of word decoding and listening comprehension (i.e., the Simple View of Reading; [Gough, P.B. & Tunmer, W.E. (1986). Remedial and Special Education 7, 6–10]), and phonological awareness. In grade 3, word decoding was measured with the Woodcock [(1998). Woodcock Reading Mastery Tests – Revised. Circle Pines, MN: American Guidance Services]. Word Identification and Word Attack subtests, listening comprehension with the Woodcock (1991) [Woodcock Language Proficiency Battery – Revised. Chicago: Riverside Publishing Company] test of Listening Comprehension, naming speed with a picture naming task, and 4 measures assessed phonological awareness. Reading comprehension was assessed in grades 3, 4, and 5 with the Woodcock (1998) Passage Comprehension subtest and in grade 5 with the Gates–MacGinitie reading test. The Simple View was evaluated twice: first, with a pseudoword measure for decoding (Grapheme–Phoneme-conversion product) and, second, with a word identification measure for decoding (word recognition product). Hierarchical regression and commonality analyses indicated that the decoding and listening comprehension products accounted for considerable variance in reading comprehension. Naming speed had a small but significant effect after accounting for the Grapheme–Phoneme-conversion product (2–3%), but little effect after accounting for the word-recognition product (0–2%). Subgroup analyses indicated that naming speed had its primary effect for less able readers. Commonality analyses supported the interpretation that naming speed contributes after the Grapheme–Phoneme-conversion product but not after the word recognition product because naming speed has already had its effect upon word recognition. These results indicate that it is important how the Simple View decoding term is defined, and that the Simple View may be incomplete, especially for less able readers.     

Word processing in dyslexics

Dyslexic children (n=21, mean age=10.2 years) were compared with normal readers of the same age, normal readers of the same reading-age, and poor readers of the same reading-age on measures of phonological decoding and automatic word processing. Three different tasks, varying in phonological demand, were used: a naming task, an auditory-visual matching task, and a lexical decision task. On each task, word-pseudoword profiles were obtained to test phonological decoding skills and unspeeded-speeded profiles were assessed to test automaticity in word processing. Main results indicated that dyslexics have a deficit in automatic phonological decoding skills. The results are discussed within the framework of the phonological deficit and the automatization deficit hypothesis.     

Prefix identification in the reading of Dutch bisyllabic words

Two experiments were conducted in order to explore the role of prefix identification in the reading of Dutch bisyllabic words. Although Dutch orthography is highly regular, several deviations from a one-to-one correspondence exist. A case in point is the grapheme E which can represent the vowels ε, e and œ in polysyllabic words. In Experiment 1, 33 third-grade children and 46 sixth-grade children were presented a list of randomly ordered bisyllabic words starting with the letter string BE and the first syllable being (1) a real prefix, (2) a phonological prefix (same sound pattern as a prefix), or (3) a pseudoprefix (sound pattern deviant from a prefix). Pseudowords starting with the same letter string were also presented. The results showed that words starting with a real or a phonological prefix were identified more accurately than words starting with a pseudoprefix. For the pseudowords, a predominant interpretation of the first part as a prefix was also evidenced. In Experiment 2, a lexical decision task was administered to 35 third-grade children, 33 sixth-grade children, and 26 adults. Words with a phonological prefix and words with a pseudoprefix were randomly presented along with other word types. The data showed both children and adults to retrieve words with phonological prefixes more quickly and more accurately than words with a pseudoprefix. The results are discussed with reference to current models of word decoding.     

Diagnosing word decoding problems: A process-analytic approach

In this article we attempt to demonstrate the theoretical and practical limitations of traditional subgroup classifications of acquired and developmental dyslexia. As an alternative, we suggest a process-analytical approach. A variant of a dual-route model for word processing is presented. The model guided the design of a computerized test battery for assessing strategies in word decoding and processes underlying each strategy. The usefulness of the approach was demonstrated on two cases, which according to traditional criteria, were classified as auditory dyslexics. Although both cases displayed marked deficiencies in the phonological route for word decoding, they differed in terms of underlying processes. In one case the primary problem could be located to phonological synthesis, whereas the other case had poor access of letters (phonological recoding). Such individual processing characteristics are not normally revealed by the traditional subgrouping approach.     

The Development of Invented Spelling

Ninety-three children were tested on a variety of reading-related skills, including Tangel and Blachman's (1992) invented spelling measure, four times over 1.5 years. Results revealed that this measure of invented spelling was 1) stable, 2) highly associated with traditional phonological awareness tasks, and 3) substantially predictive of standardized spelling and word and nonword decoding tests over time. A measure of orthographic processing, as well as phonological processing, was significantly associated with time 4 invented spelling, suggesting that both orthographic and phonological processes are involved in invented spelling. These results indicate that this measure of invented spelling may be an optimal diagnostic tool for researchers and educators interested in predicting subsequent reading ability/disability in early development. Invented spelling administered in early kindergarten may be an even better predictor of subsequent decoding skills than are traditional phonological awareness tasks, for American school children.     

Paths to reading comprehension in at-risk second-grade readers

Two studies of second graders at risk for reading disability, which were guided by levels of language and functional reading system theory, focused on reading comprehension in this population. In Study 1 (n = 96), confirmatory factor analysis of five comprehension measures loaded on one factor in both fall and spring of second grade. Phonological decoding predicted accuracy of real-word reading; automatic letter naming predicted rate of real-word reading; accuracy and rate of both real-word reading (more so than decoding of pseudowords) and text reading predicted reading comprehension; and Verbal IQ also predicted reading comprehension. In Study 2 (n = 98), the treatment group (before/after school clubs receiving an integrated instructional approach that was supplementary to the general reading program) improved significantly more in phonological decoding and state standards for reading fluency than the control group (general reading program that had some code instruction but emphasized comprehension). The rate of phonological decoding explained 60.3% of real-word reading. Both treatment and control children improved significantly in reading comprehension, but controlling for pretreatment individual differences in oral vocabulary or in phonological decoding eliminated this effect. Taken together, the results of the two studies support two paths to reading comprehension: one from vocabulary and verbal reasoning, and one from written language that has multiple links between subskills: (a) alphabetic principle --> phonological decoding, (b) automatic phonological decoding --> accurate real-word reading, (c) automatic letter coding ---> automatic word reading, and (d) automatic word reading --> fluent text reading. Instructional implications of both paths and the links within the written language are discussed.     

A twin study of the etiology of high readingability

The present study examined the etiology of highreading ability in an overall sample of 350twin pairs in which at least one member of 100pairs (54 MZ, 46 DZ) had a reading compositescore one standard deviation above the sample mean. These highreaders also had significantly higher scoresthan the rest of the sample on Full Scale,Verbal and Performance IQ scores, as well as onmeasures of phoneme awareness, orthographiccoding, phonological decoding, and verbalshort-term memory. The MZ proband-wiseconcordance rate for high group membership wassignificantly higher than the DZ proband-wiseconcordance rate and further behavioralgenetic analyses corroborated that high readingability is partly due to genetic influence(h² _g = 0.55 ± 0.22). Bivariatemultiple regression analyses demonstrated thathigh phonological awareness, orthographiccoding, phonological decoding, and short-termverbal memory skills all share significantcommon genetic influence with high readingability. These results suggest that readingability and its cognitive correlates are on acontinuous distribution, with both extremes ofthe distribution being similarly heritable. They also support the hypothesis that the samecognitive processes that are associated withdyslexia are important for the development ofhigh reading ability.     

Stimulating basic reading processes using auditory discrimination in depth

Recent research indicates that a major cause of reading (decoding) disabilities lies in an inability to manipulate speech at its phonemic (phonological) level. The Auditory Discrimination in Depth Program (ADD Program), stimulates basic phonological awareness and has been used extensively at The Reading Foundation in Calgary, Alberta. Here we present pre- and post-test data from 281 clients (ranging from school-age through adulthood) seen over a two-year period; post-test data was collected after 80 hours of ADD instruction. To assess whether significant gains had been achieved, an analysis of covariance was performed, covarying for age and initial vocabulary scores. After 80 hours of intensive instruction, highly significant gains (p<.001) were evident on measures of phonological awareness, sound/symbol connections, word identification, spelling, and decoding in context. In addition to the treatment effect, age and vocabulary had some influence on some of the variables. The data was also analyzed to determine whether the results went beyond a “group effect” only. A total of 229 cases were tabulated for gains or losses on the word attack subtest and on the reading and spelling subtests of the WRAT-R. Results indicate that the remediation was effective for all subjects, though gains on spelling tended to be less than on the two reading scores.     

Phonology,Orthography, and Decoding Skills Within and Across English and Chinese

The current study examined the construct of word-reading skills within and across English and Chinese. One hundred forty-three 5th graders who were native Chinese (Mandarin) speakers learning English as a second language completed 19 tasks representing phonological awareness, orthographic knowledge, and word decoding in both English and Chinese. Confirmatory factor analyses were conducted within each language, and the results showed that the best-fitting model for both languages was the 3-factor model involving phonological awareness, orthographic knowledge, and word decoding. Across the 2 languages, the language-specific model fit better than other models with 1 or 2 language-general factors. These results suggest that word reading is not a unified, language-general ability within and across English and Chinese among Chinese children learning English as a second language. Instruction and intervention may need to target phonological awareness, orthographic knowledge, and word decoding in each language.     

Reading on the computer with orthographic and speech feedback

In this paper we present an overview of a computer program directed toward the remediation of children's deficits in word recognition and phonological decoding. In the present studies, 138 children read stories on the computer, in their school, for a half hour per day during a semester. Children were trained to request synthetic-speech feedback (DECtalk) for difficult words by targeting the words with a mouse. Different groups received whole-word feedback, wherein targeted words were highlighted and spoken as a unit, or segmented feedback, wherein segments of words (onsets, rimes, or syllables) were sequentially highlighted and spoken by the computer, requiring the child to pay attention to and blend the segments. Both whole-word and segmented feedback resulted in almost twice the gains in standardized word recognition scores compared to control groups that spent an equal time in their normal remedial reading program. Most important, the computer-trained groups improved their phonological decoding of nonwords at about four times the rate of the control group. However, there was a significant interaction between level of deficit severity and optimal feedback condition. The most severely disabled readers showed the largest phonological decoding gains from syllable feedback, while the largest gains for the less severely disabled readers were from onset-rime feedback. The disabled readers' level of phonological awareness at pre-test was the strongest predictor for gains in word recognition and phonological decoding. Implications of the results for future training programs are discussed.     

A not-so-simple view of reading: how oral vocabulary and visual-word recognition complicate the story

The present study sought to clarify the relations amongst serial decoding, irregular word recognition, listening comprehension, facets of oral vocabulary and reading comprehension in two cohorts of children differing in reading level. In the process, the components of the simple view of reading were evaluated. Students in grades 1 (n = 67) and 6 (n = 56) were assessed on measures of phonological awareness, decoding, irregular word recognition, listening comprehension, oral vocabulary, and reading comprehension. Even when all other measures were controlled, vocabulary was found to explain reading comprehension in grade 6 but not grade 1. Vocabulary also predicted decoding in grade 6 and irregular word recognition in both grades. These results are interpreted as supporting a not-so-simple view of the constructs underlying reading comprehension that acknowledges complex connections between print skills and oral language.     

Basic auditory processing and developmental dyslexia in Chinese

The present study explores the relationship between basic auditory processing of sound rise time, frequency, duration and intensity, phonological skills (onset-rime and tone awareness, sound blending, RAN, and phonological memory) and reading disability in Chinese. A series of psychometric, literacy, phonological, auditory, and character processing tasks were given to 73 native speakers of Mandarin with an average age of 9.7 years. Twenty-six children had developmental dyslexia, 29 were chronological age-matched controls (CA controls) and 18 were reading-matched controls (RL controls). Chinese children with dyslexia were significantly poorer than CA controls in almost all phonological tasks, in semantic radical search, and in phonological recoding proficiency. Chinese children with dyslexia also showed significant impairments in most of the basic auditory processing tasks. Regression analyses demonstrated that different auditory measures of rise time discrimination were the strongest predictors of individual differences in Chinese character reading (1 Rise task) and phonological recoding (2 Rise task) respectively, with frequency discrimination also important for nonsense syllable decoding. Our results support the hypothesis that accurate perception of the amplitude envelope of speech is critical for phonological development and consequently reading acquisition across languages.