A possible contribution of word-retrieval difficulties to reading and spelling impairments

Good and poor readers at the junior high school level and good and poor spellers at the university level were compared on their ability to produce words in response to a semantic cue (a category name), a visual cue (three letters), and an auditory cue (a syllable rime). Kindergarten children were tested on a word-identification task and their retrieval of words in response to the semantic and auditory cues. At all ages, poor readers or spellers produced fewer words on all word-retrieval tasks than did good readers or spellers. Performance on the auditory and visual word-retrieval tasks correlated very highly with pseudoword reading and spelling ability in the two older groups; in the kindergarten children, auditory retrieval correlated with word identification. The results suggest that poor readers have not organized words in long-term memory according to rhyming families but that good readers have. We speculate that failure to retrieve rhyming words during acquisition of reading and spelling skills underlies the failure of poor readers and spellers to abstract the higher-order relationships between orthography and phonology.     

Orthographic processing and visual sequential memory in unexpectedly poor spellers

Does unexpectedly poor spelling in adults result from inferior visual sequential memory? In one experiment, unexpectedly poor spellers performed significantly worse than better spellers in the immediate reproduction of sequences of visual symbols, but in a second experiment, the effect was not replicated. Poor spellers were also no worse at the immediate recognition of symbol sequences. Overall, the results indicate that inferior visual memory is not characteristic of unexpectedly poor spellers. However, they do have less efficient orthographic processing skill: they were significantly slower and more error prone than better spellers at classifying both regularly and strangely spelt words, as well as at detecting letter transpositions in long words. They can thus be considered as subtly worse word readers than better spellers. While the findings question the notion of unexpectedly poor spelling in relation to normal adults, they provide confirmation of the intimate relationship between reading and spelling processes.     

Unexpectedly Poor Spelling and Phonological-Processing Skill

This study investigated the phonological skills of university students who were unexpectedly poor spellers relative to their word reading accuracy. Compared with good spellers, unexpectedly poor spellers showed no deficits in phonological memory, selection of appropriate graphemes for phonemes in word misspellings and nonword spellings, and phoneme awareness. In contrast, poor readers–poor spellers performed worse than the other groups at all but the last of these tasks. Although unexpectedly poor spellers misread nonwords more often than good spellers and took longer to begin pronouncing long, difficult-to-spell words, they took no longer to begin pronouncing shorter words and the names of corresponding pictures. The difficulty with reading nonwords and long words was thus interpreted as arising at the stage of identifying and parsing the orthographic input rather than phonological retrieval. The findings indicate that unexpectedly poor spellers of the type studied here do not have a mild phonological deficit.     

Reading,spelling and two types of irregularity in word recognition

How do good and poor readers, and good and poor spellers, vary in their decisions about words which have varying spelling-to-sound correspondences? This experiment isolates the effects of visual and phonological characteristics of words with schoolchildren of varying reading and spelling ability, aged between 9 and 11.5 years. Three groups of children were tested: good readers and good spellers, good readers who were poor spellers, and children who were both poor readers and poor spellers. The difference between‘good’and‘poor’was about two years according to the standardised tests which were used. The children performed a lexical decision task, deciding whether each letter-string was a word or not. Response times to three types of words were compared: standard regular words (e.g. SLOT, SPADE), words with common orthography but irregular spelling-to-sound relationships (e.g. HAVE, FEVER), and words with unusual orthography as well as irregular spelling-to-sound relationships (e.g. BISCUIT, ANSWER). The performance of good readers but not of poor readers was impaired on the words which were phonologically irregular (compared with regular words). Poor spellers were worse again on the dually irregular words, although not significantly, while the good spellers performed almost as well on these words as on the regular words. These results have a number of implications: that the regularity effect is phonologically and not orthographically mediated, that good readers use a predominantly phonological strategy in lexical decision while poor readers do not, and that for the best readers/spellers as tested here the orthographically and phonologically irregular words have some sort of special status which allows them to gain fast and accurate responses.     

Effects of auditory perception training on reading achievement

This study investigated the effect of an auditory training programme with backward readers who were also deficient in one or more auditory perceptual subskills. Thirty subjects were randomly assigned to one of three groups. The experimental group received a nine hour taped programme devised by the experimenter and designed to teach the skills of auditory discrimination, memory, analysis and synthesis and auditory-visual integration. The comparison group listened to stories on tape for the same duration as the experimental group, while the third group served as a control merely being tested at the beginning and at the end of the experiment. It was found that although the training programme significantly improved the performance of the experimental group over the other two groups on a total auditory perceptual test, there was no corresponding improvement in reading, on word recognition or comprehension tests. The particular auditory subskills which appeared amenable to training were auditory discrimination (rhyme) and auditory synthesis (blending and closure).     

Phonological skill,lexical decision and letter report performance in good and poor adult spellers

Two groups of undergraduate students, matched for reading skill but differing in spelling ability, participated in three experiments with the aim of exploring the causes of differences in spelling skill in this population. In the first experiment participants were presented with a range of tasks to investigate the possibility that the poor spellers had poorer phonological abilities than the good spellers. No significant differences were observed. In Experiment 2, a lexical decision task was used. The words in the task differed in orthographic neighbourhood size (N) and frequency. Analysis of the latencies revealed effects of frequency and N, but the effect of spelling group was not significant and neither was the interaction with N. Analysis of the errors revealed that the poor spellers made significantly more errors than the good spellers. In Experiment 3 participants were asked to identify the letters in briefly presented words and non‐words. There was a significant effect of stimulus type in favour of words. Poor spellers made more errors in the task than the good spellers, although the difference was restricted to non‐words. Finally, an analysis of the errors made in spelling to dictation by the two groups was carried out. This revealed that the poor spellers were more likely than the good spellers to make errors that were not phonologically plausible and that differed markedly from the target. Overall, the results are interpreted in terms of a partial orthographic representations explanation of poor spelling in good readers.     

The Effectiveness of Visual Form Training in a Prereading Program

Abstract

Five letter nonsense words representing four orders of approximation to English were constructed. The words were arranged in pairs to form choice-discrimination problems. Difficulty level of the choice-discrimination problems was varied by pairing words from the different orders of approximation. Good and poor spellers were required to choose that member of a pair which looked most like a “real English word.” Two separate studies were conducted, one with fifth grade subjects and the other with eighth grade subjects. The results obtained in the two studies were highly similar. In general, good spellers proved superior to poor spellers in number of correct choices. The differences between good and poor spellers were most apparent on choices of moderate difficulty rather than at the two extremes.     

Dyslexia: Symbol processing difficulty in the Kannada language

The purpose of this study was to investigate whether among children who speak Kannada, a Dravidian language from South India, there are those who show the same pattern of specific dyslexia as has been found to occur in children who speak European languages. The performances of 14 dyslexic children, aged between 8 and 10 years, whose native language was Kannada, were compared on a variety of tasks with fourteen normal readers and fourteen non-dyslexic poor readers. There were no significant differences between the three groups on tests of visual discrimination, visual recognition, visual recall, memory for shapes in sequence, or auditory discrimination. There were differences, however, between the dyslexics and the normal readers on tests of recall of auditorily presented digits, word analysis, word synthesis, and on two tests of visual-verbal association. The non-dyslexic poor readers were more similar to the dyslexics on recall of auditorily presented digits and word synthesis but more similar to the normal readers on word analysis and on the two tests of visual-verbal association. It is argued that these results are evidence of a consistent pattern in specific dyslexia which does not depend on any one writing system or geographical location.     

Spelling rule usage among students with learning disabilities and normally achieving students

Spelling performance of students with learning disabilities (LD) was compared with that of same-age normally achieving subjects and younger normally achieving subjects. Subjects with learning disabilities were divided into two groups: poor readers/poor spellers and good readers/poor spellers. A spelling battery was administered that included one task of phoneme-grapheme correspondence rule usage and four tasks of suffix rule usage. The groups with learning disabilities performed significantly below the same-age normally achieving group on all tasks. No significant differences among the two groups with learning disabilities and their achievement-level peers emerged in primary analyses. However, secondary analyses revealed differences in mastery of the past tense spelling rule ed, and in some subskills related to the spelling of words with suffixes. The cognitive-linguistic significance of these results is discussed.     

Auditory perceptual processing in reading disabled children

One hundred and three children attending Learning Assistance Centres due to reading difficulties and one hundred and three matched, average readers were administered a battery of auditory perceptual processing tasks. The battery was composed of auditory analysis and synthesis, auditory sequential memory, auditory discrimination, and phonemic segmentation tasks. A principal components analysis yielded four factors. These were determined to be advanced phonological awareness, sequential memory, discrimination, and simple phonological awareness. Discriminant analyses, using the factor scores, indicated that three of the four factors were able to discriminate between the able and disabled readers. Most notable among these was advanced phonological awareness. Auditory discrimination could not discriminate between the groups. The results suggest that there may not be one underlying phonological ability implicated in successful reading acquisition. Furthermore, it is clear that two levels of phonological awareness exist and that screening and diagnostic instruments should address both in order to have predictive validity.     

Visual Sequential Memory and Spelling Ability

Although good visual memory is frequently cited as an essential requirement for competent spelling, there is little empirical evidence to support this. In this paper visual sequential memory was studied in two separate controlled experiments which compared the test performances of 13‐year‐old poor spellers and controls. Test materials were carefully designed to obtain a measure of visual memory with minimal interference from verbal coding. With the variable of IQ controlled for, visual memory did not appear to differentiate between the groups unless mediated by verbal coding.     

Components of Reading Ability: Multivariate Evidence for a Convergent Skills Model of Reading Development

The objectives of this series of 3 studies were (a) to evaluate whether French-speaking children mainly use phonological mediation in the first stage of reading acquisition in a silent-reading task and (b) to examine the role of phonological processing in the construction of the orthographic lexicon. Forty-eight French children were followed from kindergarten to the end of Grade 2. Their phonological skills were assessed using a semantic categorization task with homophone and visual foils (Study 1); their orthographic skills were assessed using a choice task involving a correct exemplar, a homophone, and a visual foil (Study 2). In the semantic categorization task, the differences between the visual and homophone foils increased with time, as the homophone foils were more and more likely to be chosen. In the orthographic choice task, performance improved with time, but errors were more likely to involve homophone foils. The results obtained by two subgroups of children who differed in their level of orthographic expertise at the end of Grade 2 (Study 3) indicated that, 1 year earlier (at the end of Grade I), the future "expert" spellers were more likely than the future "poor" spellers to use phonological processing in silent reading (semantic categorization task). Moreover, in Grade 1, future expert spellers' phonological skills in reading aloud and in spelling from dictation (pseudoword tasks) were better than those of future poor spellers, and future expert spellers also had better phonological awareness skills at the beginning of the last year of kindergarten. These results suggest that French-speaking children use phonological mediation in silent-reading tasks and that phonological processing contributes to the construction of the orthographic lexicon.     

Spelling without phonology: A study of deaf and hearing children

To what extent does phonology play a role in spelling English words? The written responses of deaf students and groups of hearing children to five tasks were subjected to quantitative and qualitative analyses. The first three tasks were used to see if deaf students utilized phonology when they generated their own words and to compare their spelling performance with that of hearing subjects. The fourth and fifth tasks were designed to compare the spelling performance of deaf and hearing subjects when they were required to reproduce visually presented common words. Results showed that deaf students, who were chronologically much older, were not better spellers than hearing children from the fifth grade. Analysis of data revealed little evidence that the deaf students involved in the present study utilize phonology in spelling. Nor did word-specific visual memory for entire words appears to play a role in spelling by deaf students. Rote visual memory for letter patterns and sequences of letters within words, however, appears to play a role in the spelling by deaf students. It is concluded that sensitivity to the stochastic-dependent probabilities of letter sequences may aid spelling up to certain point but phonology is essential for spelling words whose structure is morphophonemically complex.

     

Spelling feedback in an ICT-learning environment: Issues of proficiency, training efficiency, and transfer

This study was designed to compare the effectiveness of two different forms of feedback on spelling performance of Dutch Grade-2 students, that is, knowledge-of-results and informational feedback. In the knowledge-of-results feedback condition, the speller is told that the word is spelled incorrectly, whereas in the informational feedback condition, the speller is told what is spelled incorrectly. Three main questions were investigated. One, to what extent does the nature of feedback affect students with good and poor spelling skills differently? Two, does the nature of feedback affect various forms of spelling difficulties differently? Three, is training efficiency differentially affected by the nature of feedback?The results showed that both feedback conditions were equally effective in teaching students the spelling of words, irrespective of spelling level and spelling difficulty. Both feedback conditions led to a similar level of transfer to a set of new words, the effect being stronger in good than in poor spellers. Transfer was best on analogy spellings, followed by rule-based, and worst on idiosyncratic spellings. The poor spellers learned the spelling of words more efficiently in the informational-feedback condition than in the knowledge-of-results condition, whereas for the group of good spellers efficiency was equally large in both conditions.     

Poor performance on serial visual tasks in persons with reading disabilities: impaired working memory?

The present study investigates the performance of persons with reading disabilities (PRD) on a variety of sequential visual-comparison tasks that have different working-memory requirements. In addition, mediating relationships between the sequential comparison process and attention and memory skills were looked for. Our findings suggest that PRD perform worse than normally achieving readers (NAR) when the task requires more than a minimal amount of working memory, unrelated to presentation rate. We also demonstrate high correlations between performance on the task with the most working-memory demands and reading-related skills, suggesting that poor working-memory abilities may be one of the underlying mechanisms of dyslexia. The mediating model analysis indicates that order judgment tasks are mediating to verbal working memory, suggesting that visual sequence memory precedes auditory sequence memory. We further suggest that visual tasks involving sequential comparisons could probe for poor working memory in PRD.     

Relationships among rapid digit naming, phonological processing, motor automaticity, and speech perception in poor, average, and good readers and spellers

In this article, we explore the relationship between rapid automatized naming (RAN) and other cognitive processes among below-average, average, and above-average readers and spellers. Nonsense word reading, phonological awareness, RAN, automaticity of balance, speech perception, and verbal short-term and working memory were measured. Factor analysis revealed a 3-component structure. The first component included phonological processing tasks, RAN, and motor balance. The second component included verbal short-term and working memory tasks. Speech perception loaded strongly as a third component, associated negatively with RAN. The phonological processing tests correlated most strongly with reading ability and uniquely discriminated average from below- and above-average readers in terms of word reading, reading comprehension, and spelling. On word reading, comprehension, and spelling, RAN discriminated only the below-average group from the average performers. Verbal memory, as assessed by word list recall, additionally discriminated the below-average group from the average group on spelling performance. Motor balance and speech perception did not discriminate average from above- or below-average performers. In regression analyses, phonological processing measures predicted word reading and comprehension, and both phonological processing and RAN predicted spelling.     

Adult spelling strategies

The goal of this study was to investigate how adult English speakers, who are good readers, but who differ in spelling ability, remember word-specific spelling information. In the first experiment, participants learned the spellings of words they had previously misspelled, while thinking out loud. The main strategies observed in order of popularity were: letter rehearsal, overpronunciation, comparison of the remembered and the correct spelling, morphological analysis and visualisation. All strategies produced good learning success for the better spellers, but weaker spellers had less success with overpronunciation, comparison and morphological analysis. In a second experiment, when participants were shown their misspelling and the correct spelling, and instructed to use either overpronunciation or comparison to learn the correct spelling, learning success was independent of spelling ability. However, sequential verbal memory ability was associated with greater success in using overpronunciation, and sequential visual memory ability with greater success in using comparison. The findings provide new insight into the types of strategies that advanced learners use spontaneously to memorise arbitrary letter sequences, as well as revealing how effective the strategies are.     

Role of working memory in explaining the performance of individuals with specific reading comprehension difficulties: A meta-analysis

It is well established that working memory is related to reading comprehension ability. However, its role in explaining specific reading comprehension difficulties is still under debate: the issue mainly concerns whether the contribution of working memory is dependent on task modality (verbal tasks being more predictive than visuo-spatial tasks) and/or on the attentional control implied in working memory tasks (tasks requiring storage/manipulation being more predictive than storage-only tasks, regardless of task modality). Meta-analysis is used here to examine the relevance of several working memory measures in distinguishing between the performance of poor and good comprehenders in relation to the modality of the working memory task, and the involvement of controlled attention required by such a task. Our results demonstrate that memory tasks that are demanding in terms of attentional control and that require verbal information processing are best at distinguishing between poor and good comprehenders, suggesting that both domain-specific factors as well as general factors of working memory contribute to reading comprehension performance. The implications for different models of working memory in relation to reading comprehension are discussed.     

Specific spelling disability: Factual or artifactual?

The research reported in this paper attempted to find whether the so called poor spellers who are good readers are indeed good readers or if this impression is misleading. Three college students who appeared to be poor spellers but good readers were tested using a variety of techniques. It was found that the three subjects were indeed inefficient readers who committed numerous errors in reading function words, low frequency and unfamiliar words, and pronounceable nonwords. Not being proficient in the phonological conversion of print, these subjects depend excessively on an orthographic sight reading strategy which hinders accurate reading. There appears to be a trade off between speed and comprehension in reading and by slowing down considerably, the poor spellers but good readers attain an acceptable level of comprehension. It was concluded that reading aloud and spelling involve phonological mediation and, therefore, are not completely dissociable.     

Difficulties with consonants in the spelling and segmentation of CCVCC pseudowords: Differences among Dutch first graders

The goal of the present study was to explore the errors made by Dutch first graders in spelling syllable-initial and syllable-final consonants clusters in CCVCC pseudowords, to look for error types that discriminate poorer spellers from better spellers, and to relate these error types to the errors made when segmenting the same words. Such a correspondence across tasks would point to problems with the phonemic conceptualization of the spoken word as a source of spelling difficulty. The most prominent spelling error among poor spellers was omission of the consonant immediately following the vowel. This error seemed to be reflected in segmentation by omission of that consonant, but even more by the consonant being left unsegmented from the preceding vowel. The spelling and segmentation errors that we observed in Dutch are similar to those previously observed in English. The finding that such errors are made with a disproportionate frequency by poor spellers is new and suggests a basic problem in developing a phonemic conceptualization of spoken words (and of postvocalic consonant clusters in particular) that is adequate for spelling.