Cognitive processes separating good and poor readers when IQ is covaried

In this paper we address the issue of separating reading disability from general intelligence in order to identify those cognitive processes which discriminate between poor and good readers when intelligence is covaried. Subjects were 140 Grade 5 and 6 students who were administered Lorge-Thorndike intelligence test (1964), a reading decoding test and cognitive tests which measure planning, attention-arousal and simultaneous-successive processing. The tests which emerged as discriminators between good and poor readers when Lorge-Thorndike full scale IQ was covaried, were three measures of successive processing (Sequence Repetition, Naming Time, Speech Rate) and a measure of selective attention, the familiar Stroop Color-Word test. Subsequently, a comparison of reading disabled high and low average IQ children confirmed that the four tests were performed poorly by both groups. All four tests involve the use of articulatory representation, confirming the important role speech-related processes play in reading (decoding). The results support the notion that deficient speech-related processes may be the central problem of the majority of poor readers, especially those of above-average intelligence. Future directions for research on phonological coding and articulation were suggested.     

Differentiating between difficult-to-remediate and readily remediated poor readers: more evidence against the IQ-achievement discrepancy definition of reading disability

In this article we discuss research bearing on the traditional use of the IQ-achievement discrepancy to define specific reading disability. We initially review the evidence presented by Rutter and Yule (1975) in support of this practice, and then discuss results from subsequent studies that have questioned the reliability of their findings. We also discuss results from more recent studies demonstrating that the IQ-achievement discrepancy does not reliably distinguish poor from normal readers, whereas language-based measures do reliably distinguish these groups. We highlight results from a study we recently completed, in which it was found that IQ scores did not differentiate between poor readers who were found to be readily remediated and poor readers who were difficult to remediate. In view of the convergent evidence against the use of IQ scores to define specific reading disability, we suggest that the IQ-achievement discrepancy definition of this disorder be discarded.     

A reading level match study of nonword reading skills in poor readers with varying IQ.

This study evaluated the hypothesis that poor readers are characterized by poor nonword reading skills, but that a specific deficit, as opposed to a developmental lag, in nonword reading will be found only in subjects whose reading is discrepant from intellectual ability. To test this hypothesis, we measured nonword reading skills in 93 (64 male, 29 female) third-grade poor readers and 54 (37 male, 17 female) fifth-grade poor readers (with and without reading/IQ discrepancies) who were matched to 147 (81 male, 66 female) nondisabled first graders on word identification skills. Results showed third- and fifth-grade poor readers to be significantly more impaired than word-identification level match first graders on all measures on nonword reading. These findings were not related to the verbal IQ level within the poor reader groups and, thus, provide strong evidence for a deficit in nonword reading skills that is not explained by verbal intelligence.     

A conceptual overview of the regression discrepancy model for evaluating severe discrepancy between IQ and achievement scores

A conceptual overview of the Regression Discrepancy Model (RDM) for determining severe discrepancy between IQ and achievement scores is presented in order to enhance understanding of the model without the use of the complex mathematical equations that constitute the model. The six specific goals of the RDM are identified, and figures illustrate the manner in which the model accomplishes each goal. Figures are also provided from a RDM computer output showing the basic outcomes of the model. Advantages and disadvantages of the RDM are discussed to further promote understanding of the model.     

Text comprehension strategy instruction with poor readers

The goal of this study was to investigate the effects of teachingtext comprehension strategies to children with decoding andreading comprehension problems and with a poor or normallistening ability. Two experiments are reported. Four textcomprehension strategies, viz., question generation, summarizing,clarification, and predicting were taught through directinstruction and reciprocal teaching. In both experiments, effectswere measured according to a pretest – posttest – retentiontest – control group design. Dependent variables wereexperimenter-developed strategic reading and listening tests, andstandardized reading and listening comprehension tests. In thefirst experiment the subjects were 9 to 11-year-old poor readersfrom special schools for children with learning disabilities. Inthis experiment, the intervention program's texts and strategyinstructions were presented in listening settings only. Thesubjects in the second experiment were 10-year-old children fromregular elementary schools and 9 to 11-year-old children fromspecial schools. They were also poor readers but their decodingperformance was not as poor as in the subjects in experiment 1.In experiment 2, the intervention program involved textpresentations in alternating reading and listening lessons.Although in general, normal listeners performed better on allcomprehension tests than poor listeners, there were nodifferential program effects for the two listening levels. Cleareffects of both programs were found on strategic reading andlistening tests administered directly after the interventions. Inthe first experiment, maintenance test performance showedprolonged program benefits, whereas in the second experimentthese maintenance effects were blurred by unexpected gains of thecontrol groups of students, especially from regular schools.Finally, apart from some local successes, neither of the twoexperiments offered stable evidence of transfer of comprehensionstrategy training to standardized general listening and readingcomprehension tests.     

Response to fluency-oriented intervention of Dutch poor readers

Dysfluency is the major characteristic of dyslexia in languages with a relatively shallow orthography, particularly when unfamiliar words have to be processed. The present study investigated to what extent slow identification of unfamiliar words can be speeded up and whether the expected variation in response-to-intervention can be related to differences in the phonological recoding skills in order to gain insight in the core deficits of dyslexia. The intervention involved four months of continued individual practice of fluency after maximal accuracy was achieved. Response-to-intervention was made operational in terms of individual learning curves, derived from multilevel analysis with repeated measures of response times, number of trials and accuracy as dependent variables. Increasing fluency was indicated by response times getting shorter. An unselected group of poor grade 2 readers who received the intervention in addition to regular classroom practice improved their reading compared to a matched control group who received no additional training. As expected, there were substantial individual differences between students in terms of response-to-intervention (RTI). Good and poor treatment responders progressed comparably when the training was done in the relatively easy training condition with closed word sets of four letter words with one consonant cluster, repeating the overlapping cluster + vowel. Increasing the difficulty level of the training condition to word sets overlapping in consonant cluster only, resulted in substantial individual differences in all three dependent variables. In fact, the poor responders did not improve any more whereas the poor responders continued to do so. This particular characteristic of each student's individual learning curve appeared to be highly predictive of the overall response-to-intervention or intervention outcome. The contribution of this finding to the understanding of dyslexia is discussed in terms of RTI.     

Lexical decision and oral reading by poor and normal readers

The primary goal of this study was to compare a paper-and-pencil version of the lexical decision task, which can be administered groupwise, with reading aloud a differently ordered list of the same words and pseudowords. Participants were first and second graders (“normal readers”) and students from schools for children with learning difficulties. On the average, the latter “poor readers” scored at the same oral reading level as the normal readers, but were older. The correlation between both tasks appeared to be high and both tasks had comparable correlations with third variables, suggesting that performance is determined by the same processes. Because the lexical decision task showed little evidence for guessing, it may be an — even better — alternative for oral reading. No differences between participant groups were found that point to different reading strategies. Error analysis, however, indicates that the poor readers probably have a specific problem in the oral reading of pseudowords.     

Naming speed and serial recall in poor and adequate readers

Digit-naming speed was significantly correlated with serial memory capacity when the memory test was given under nonrhyming conditions, but not when it was given under rhyming conditions which are presumed to cancel the effectiveness of phonetic coding. In addition, the digit-naming test accounted for all of the power of the nonrhyming memory test to discriminate between reading-disability and normal children. Based on these results, it was hypothesized that digit-naming speed is a measure of the ability to engage in high-speed phonetic coding, that this ability is impaired in poor readers, and that this impairment affects short-term memory span. Possible explanations of the relevance of phonetic coding speed to reading ability and to short-term serial memory are discussed.     

Reading strategy use between Chinese good and poor readers: a think‐aloud study

This study aimed to explore the differences between Chinese good and poor readers in their strategy use by using a think‐aloud method. Eight grade 7 students in Hong Kong, four good readers and four poor readers, received a think‐aloud task and an interview in the study. Consistent with the Western studies, findings of this study indicated that Chinese good readers used more strategies and had better ability and knowledge of strategy use than did poor readers. In addition to the cognitive deficiencies, poor readers were also found to have poorer intrinsic motivation than did good readers. The combined problems of poor reading ability and motivation made them reluctant to process the text at a deeper level and they gave up easily when they encountered reading difficulties. Implications of these findings for studying the reading problems of Chinese students and implementing effective reading instruction in Hong Kong Chinese language teaching are discussed.     

Processing of visual and name codes in good and poor readers

Good and poor readers of three different ages (7, 9, and 11 years) were required to respond to stimuli which could be matched by physical similarity (e.g., A-A) or by name (e.g., A-a). It was argued that these two matches allow for the differentiation of two primary levels of processing required of a visual input. Both age and reading competence proved to be significant variables in relationship to the time required for the physical and name matches. The lack of a significant age or reading competence interaction with the type of match (physical or name) made the deficiency present in the name match difficult to interpret. However, data were discussed which indicate that poor readers are less efficient in anticipating the form required in the name match. This inability to reduce required visual processing through anticipation may reflect a general processing deficiency of the poor reader.     

Using portfolios: a way to improve performance and self-esteem with poor readers?

The main questions answered by the intervention of using portfolios during reading and spelling lessons were: do poor readers in the intervention condition perform better and do they show a higher self-esteem than poor readers in the control condition? A post-hoc design was used to compare an intervention group with a control group. The independent variable was using portfolios as part of reading and spelling instruction. The dependent variables were literacy skills, conceptual knowledge on reading and writing, and self-esteem. Intelligence score was used as a covariable. The study included 92 students from grade 3 (six to seven-year-olds) from two schools providing regular education. The results on the quantitative measurements indicated that using portfolios did not improve performance with reading and spelling and self-esteem. The qualitative findings with respect to the 14 poor readers of the participating subjects revealed that their reading performance and self-esteem decreased further in both conditions. It is argued that teachers should explicitly use portfolios as a way to evaluate and discuss performance with poor readers so as to better understand the student's level of instruction and feelings of competence, and actually apply that knowledge during instruction.     

Comparisons of learning ease and transfer propensity in poor and average readers

Assisted and unassisted performance of 14 average readers (7 boys and 7 girls between 9.67 and 13 years of age) and 14 children with learning disabilities (10 boys and 4 girls between 10.8 and 13 years of age) were compared on a reading comprehension task--stating the main idea in expository paragraphs in which the topic sentence was either first, last, or missing. Children were trained to find the main idea in one- and two-paragraph texts and took pre- and posttests in which they were asked to write the main ideas contained in one-, and six- to eight-paragraph texts. The main ideas contained in these texts either were explicitly stated (topic sentence first or last) or were implicit (topic sentence missing). Children's performance improved from pre- to posttest, although the effect of topic sentence placement was evident at both test times (performance on topic-sentence-first paragraphs was better than on topic-sentence-last paragraphs, which was, in turn, better than performance on topic-sentence-missing paragraphs). Although average achieving children and children with learning disabilities did not differ on static pre- and posttest measures, they did differ in how easily they learned to find the main idea under different topic sentence placement conditions. Children with learning disabilities required significantly more instruction than average readers to reach mastery criterion on nonideal text structures. Implications of the findings are discussed from both assessment and pedagogical perspectives.     

Reading strategies of good and poor readers in word and phrase presentation

This paper reports two experiments which use a micro-computer driven self-paced reading task to examine the reading strategies of good and poor readers. Unlike previous work using this technique the children were able to regress to earlier parts of the texts by pressing the appropriate computer key. The main focus of the experiments is on the relationship between reading strategies, reading ability and the length of the textual units which are presented to the children. Reading ability is found to influence reading strategies differently according to whether text is presented in single words or in phrases. A similar result is found for the time taken to read the texts. The results are discussed in the light of current theories of text processing. However the main point of the paper is to illustrate the use of a potentially powerful diagnostic tool which will operate on computers currently available in schools.     

Spelling consistency affects reading in young Dutch readers with and without dyslexia

Lexical-decision studies with experienced English and French readers have shown that visual-word identification is not only affected by pronunciation inconsistency of a word (i.e., multiple ways to pronounce a spelling body), but also by spelling inconsistency (i.e., multiple ways to spell a pronunciation rime). The aim of this study was to compare the reading behavior of young Dutch readers with dyslexia to the behavior of readers without dyslexia. All students participated in a lexical-decision task in which we presented pronunciation-consistent words and pseudowords. Half of the pronunciation-consistent stimuli were spelling consistent and the other half were spelling inconsistent. All three reader groups, that is, students with dyslexia, age-match students, and reading-match students, read spelling-consistent words faster than spelling-inconsistent words. Overall reading speed of students with dyslexia was similar to that of reading-match students, and was substantially slower than that of age-match students. The results suggest that reading in students with or without dyslexia is similarly affected by spelling inconsistency. Subtle qualitative differences emerged, however, with respect to pseudoword identification. The conclusion was that the findings were best interpreted in terms of a recurrent-feedback model.     

Core deficits and variable differences in Dutch poor readers learning English

To examine phonological core deficits and variable orthographic competence, Dutch poor readers were investigated as they began instruction in reading in English (at about 14 years of age). A subgroup of poor readers with good orthographic competence in English (Poor/Good) and a subgroup with poor orthographic competence in English (Poor/Poor) were identified. Verbal and reading tasks in Dutch and English were assessed twice within a 10-month interval, and the scores of the two measurements were combined to gain stability. For both subgroups, we found indications that phonological core deficits and variable differences in orthographic competence transferred across the two languages. However, the Poor/Good subgroup did not show the weaknesses in serial rapid naming and semantic fluency of the Poor/Poor subgroup in both languages. Moreover, the Poor/Good readers were relatively good in reading skills and verbal learning in English. They had a specific reading disability at the phonemic level but also had compensatory skills at the level of syllables and words that help them to acquire English as second language. In contrast, the Poor/Poor subgroup had a more general reading disability, most prominently present in L2. The results are discussed in terms of orthographic differences between Dutch and English, the phonological-core variable-differences model, and subtypes of dyslexia.     

Effects of self-monitoring training on reading accuracy and fluency of poor readers

The effect of the self-monitoring training on reading accuracy and fluency of second-grade poor readers was examined. The participants were assigned in one experimental and three control groups. The experimental group was reinforced with token-economy for self-correction and fluent reading. One control group practiced reading without feedback, the second one practiced the calculation of simple arithmetic tasks, and the third one received no training at all. The improvement in reading accuracy was obtained only in the self-monitoring group, and remained for five months. However, the improvement in reading fluency was obtained in the two reading groups, but only the self-monitoring group showed further improvement during five months after training. The results confirmed the importance of self-monitoring already at the level of lexical access in reading and that of local text comprehension.