Reading Comprehension Deficits Research Articles

Dissociating reading and auditory comprehension in persons with aphasia.

Language comprehension is often affected in individuals with post-stroke aphasia. However, deficits in auditory comprehension are not fully correlated with deficits in reading comprehension and the mechanisms underlying this dissociation remain unclear. This distinction is important for understanding language mechanisms, predicting long-term impairments and future development of treatment interventions. Using comprehensive auditory and reading measures from a large cohort of individuals with aphasia, we evaluated the relationship between aphasia type and reading comprehension impairments, the relationship between auditory versus reading comprehension deficits and the crucial neuroanatomy supporting the dissociation between post-stroke reading and auditory deficits. Scores from the Western Aphasia Battery-Revised from 70 participants with aphasia after a left-hemisphere stroke were utilized to evaluate both reading and auditory comprehension of linguistically equivalent stimuli. Repeated-measures and univariate ANOVA were used to assess the relationship between auditory comprehension and aphasia types and correlations were employed to test the relationship between reading and auditory comprehension deficits. Lesion-symptom mapping was used to determine the dissociation of crucial brain structures supporting reading comprehension deficits controlling for auditory deficits and vice versa. Participants with Broca's or global aphasia had the worst performance on reading comprehension. Auditory comprehension explained 26% of the variance in reading comprehension for sentence completion and 44% for following sequential commands. Controlling for auditory comprehension, worse reading comprehension performance was independently associated with damage to the inferior temporal gyrus, fusiform gyrus, posterior inferior temporal gyrus, inferior occipital gyrus, lingual gyrus and posterior thalamic radiation. Auditory and reading comprehension are only partly correlated in aphasia. Reading is an integral part of daily life and directly associated with quality of life and functional outcomes. This study demonstrated that reading performance is directly related to lesioned areas in the boundaries between visual association regions and ventral stream language areas. This behavioural and neuroanatomical dissociation provides information about the neurobiology of language and mechanisms for potential future treatment interventions.

Efficacy of reading strategies on text-level reading comprehension in people with post-stroke chronic aphasia: A repeated measures study.

People with aphasia (PWA) frequently experience difficulties in understanding longer written content such as paragraphs or books. Reading strategies are a promising approach to treat text-level reading comprehension deficits in PWA. Nevertheless, empirical evidence for their efficacy remains rare. The primary objective of this study was to analyse the efficacy of a strategy-based intervention on text-level reading comprehension in PWA. Secondary objectives were to compare the effects of two strategy-based intervention components and to explore potential moderator effects. A protocol was published prior to data acquisition. In a repeated measures trial, 26 German participants with chronic, post-stroke aphasia participated in a waiting period without aphasia treatment (control condition) followed by a strategy-based intervention called 'Strategiebasierte Textverständnis-Therapie bei Aphasie' (StraTexT, 14 face-to-face-sessions, twice per week, 60 min each). Two strategy combinations, Intervention Micro targeting microstructure and Intervention Macro targeting macrostructure, were applied to newspaper and magazine articles. Participants were randomly allocated to two parallel groups that received these strategy combinations in interchanged sequences. Assessments were implemented before and after each period as well as 3 and 6 months after the intervention. The primary outcome measure was text-level reading comprehension measured with the total score of a German version of the Test de Compréhension de Textes (TCT-D). Secondary outcome measures addressed the self-reported perception of reading abilities, reading activities and feelings about reading (German version of the Comprehensive Assessment of Reading in Aphasia CARA reading questionnaire) as well as selected cognitive functions. The per-protocol-analysis included data from 22 participants. We found significant small improvements up to 6 months post-intervention compared to pre-intervention in the TCT-D Total (d = 0.35-0.46) as well as medium to large improvements in the CARA questionnaire (d = 0.68-0.96). Up to 3 months after the intervention, treatment-induced improvements in the TCT-D Total were significantly larger than change without treatment during the control condition. There was no evidence of moderator effects. Furthermore, we found improvements in several cognitive functions. Reading strategies can lead to long-term improvements in text-level reading comprehension and in self-reported reading abilities, feelings about reading and reading activities in aphasia. In regular clinical settings, it seems reasonable to implement both Intervention Micro and Intervention Macro. It remains important to investigate participant characteristics that contribute to treatment success. What is already known on the subject Systematic reviews and multiple case studies suggest that reading strategies are a promising approach to treat text-level reading comprehension in aphasia. The efficacy of reading strategies has been demonstrated for different populations. However, to date no group study has evaluated the efficacy of reading strategies on text-level reading comprehension in people with aphasia. What this study adds This study provides the first group-level evidence about the efficacy of a systematic strategy-based intervention in 22 people with post-stroke chronic aphasia. During 14 treatment sessions, participants applied four reading strategies to newspaper and magazine articles within two intervention components called Intervention Micro and Intervention Macro (two strategies per intervention component). We found improvements in text-level reading comprehension for at least 3 months post-intervention, as well as effects on selected cognitive functions and self-reported reading abilities, thoughts and feelings about reading and the ability to engage in reading activities. What are the clinical implications of this work? The strategies and materials evaluated in this study could be used in clinical practice with people with aphasia. In order to replicate treatment effects in clinical practice, we suggest applying the strategy combination with the same protocol features (e.g., frequency, duration, homework, product orientation) as in this study, implementing Intervention Micro and Intervention Macro sequentially in either order. As treatment response was not equal in all individuals, it seems important to investigate individual features that contribute to treatment success.

Reading assessment in ADHD and dyslexia in Brazilian teenagers

IntroductionAttention Deficit Hyperactivity Disorder (ADHD) and Dyslexia are among the most frequent developmental disorders in school-aged students, and both often cause an impact on scholar reading performance. Therefore, it is fundamental to trace the differential profile in reading performance in such diagnoses. Competent reading occurs through the interaction of several cognitive processes, such as decoding, fluency, and oral and reading comprehension, that should be assessed in an evaluation.ObjectivesThe study aimed to characterize the performance of students with ADHD and dyslexia.MethodsWe assessed 25 adolescents, aged between 11 and 14 years old, from 6th to 9th year of middle school of public and private schools in Brazil, divided into two groups: the group with ADHD (16 students) and the group with dyslexia (9 students). The diagnoses were established by a multidisciplinary center and there were no comorbidities for any case. The instruments used were: Comprehension Test of Words and Pseudowords II (TCLPP II) to assess decoding (indicate if the word is correct or incorrect); Reading Fluency Test (TFL) to assess fluency in single words and in text reading; Cloze Reading Comprehension Test (TCCL) to measure reading comprehension; and the WISC vocabulary subtest to assess auditory comprehension.ResultsNon-parametric analyzes revealed statistically significant differences in measures of textual comprehension, especially in the tasks that involved decoding and fluency processes, evidencing superior performance of the group with ADHD in these tests. Participants with dyslexia had a significantly higher performance in relation to the number of word omissions, that is, they had lower omission errors. There was no significant difference between groups in auditory comprehension.ConclusionsA differential profile was found in reading performance, consistent with the cognitive deficits classically pointed out in the literature for each diagnosis: phonological deficits in dyslexia, with problems in decoding and fluency; and attentional deficits in ADHD, with omission errors. In the comprehension measures, dyslexic group had significant lower performance than ADHD in the Cloze Reading Comprehension Test, but there was no difference in the Vocabulary subtest-WISC. An explanatory hypothesis is that, to understand the text, it is necessary to recognize the words previously, whereas, in the WISC, it is not necessary to read, since the questions are oral. These results corroborate the hypothesis that deficits in reading comprehension in dyslexia are more related to difficulties in word recognition and fluency skills than in general listening comprehension.Financial support: CAPES Proex [grant 0426/2021, no. 23038.006837/2021-73]; CNPq [grant 310845/2021-1]Disclosure of InterestNone Declared

Teaching Expository Text Management and Proficiency Skills for Comprehension for Students With Language/Learning Disabilities

The purpose of this registered report study was to determine the effects of explicit text structure instruction on the expository text comprehension of students with language and learning disabilities (LLD) using a multiple baseline design across conditions (e.g., compare–contrast and cause–effect) and participants. Participants included four children enrolled in the fifth grade with previous diagnoses of language impairment and reading comprehension deficits. Text structure instruction was provided during the intervention phases using a researcher-designed intervention program called TEXT-MAPS. The dependent variables included text structure and signal word identification and percentage of idea units recalled from expository text. All participants showed improved recall of idea units for compare–contrast and cause–effect texts with maintained performance 1-month post-intervention. The program also had notable effects on participants’ identification of signal words and text structures in compare–contrast and cause–effect texts. The magnitude of the Tau- U effect sizes was in the large, medium, and small range, and varied across participants. The results indicate that short-term, explicit text structure instruction can be effective for children with LLD with deficits in expository reading comprehension. Considerations for further research and practical implications are presented.

Aberrant prefrontal functional connectivity during verbal fluency test is associated with reading comprehension deficits in autism spectrum disorder: An fNIRS study.

Children with autism spectrum disorder (ASD) show marked difficulties in reading comprehension, a complex cognitive skill fundamental to successful daily functioning that is associated with core executive functions. However, the neurophysiological mechanisms underlying reading comprehension deficits in these children remain elusive. Twenty-one right-handed males with high-functioning ASD (mean age = 10.24 years) and 23 age-, IQ-, educational level-, sex- and handedness-matched typically developing (TD; mean age = 10.14 years) individuals underwent a reading comprehension test and the semantic verbal fluency test that tapped core executive functions underlying reading comprehension during concurrent prefrontal functional near-infrared spectroscopy (fNIRS) measurement. Participants’ information processing efficiency was also assessed. High-functioning ASD children exhibited general reading comprehension [main effect of group: F(1,40) = 7.58, p = 0.009], selective verbal fluency deficits [Group × category interaction: F(1,42) = 4.90, p = 0.032] and slower processing speed (t42 = 2.36, p = 0.023). Regarding the hemodynamics of the prefrontal cortex (PFC), although ASD individuals showed comparable patterns of PFC brain activation to their healthy counterparts, lower PFC intrahemispheric [main effect of group: F(1,42) = 11.36, p = 0.002] and interhemispheric [main effect of group: F(1,42) = 7.79, p = 0.008] functional connectivity were evident during the semantic verbal fluency test. At the whole-group level, poorer reading comprehension performance was associated with poorer performance in the semantic verbal fluency test (r42 = 0.508, p < 0.001). Moreover, poorer semantic verbal fluency test performance was associated with slower information processing speed (r42 = –0.312, p = 0.044), which is associated with reduced left medial PFC functional connectivity (r42 = –0.319, p = 0.040). Abnormal intrahemispheric and interhemispheric prefrontal hypoconnectivity is associated with deficits in executive processes essential for reading comprehension in ASD. Our study has provided important implications for the neuropsychological and neurophysiological mechanisms underlying reading comprehension deficits in ASD.

Do Students With Specific Learning Disorders With Impairments in Reading Benefit From Linguistic Simplification of Test Items in Science?

Previous research illustrated that reading comprehension and science performance correlate highly. Because students with specific learning disorders with impairments in reading (SLD-IR) show deficits in reading comprehension, they may struggle to perform in science. As language in science is characterized by linguistic complexity, the question arises whether students with SLD-IR can be supported by reducing linguistic complexity. The aim of this preregistered study was to investigate whether students with SLD-IR benefit more from linguistic simplification in science than their peers without SLD-IR. The sample consisted of 70 students (age, M = 12.67; 50% female) with n = 35 having SLD-IR. Applying a multilevel logistic regression model, we found neither a main effect of linguistic simplification nor an interaction effect (differential boost) on science performance. However, students with SLD-IR performed significantly lower in science. Implications include further investigation on how to support students with SLD-IR in their science performance.

Assessment of effective strategy instruction and reading comprehension

Reading comprehension is a critical skill for student success in school, the workplace, and daily life, yet many students display significant reading comprehension deficits. This article describes the impact effective strategy instruction can have on the reading outcomes of students with learning disabilities and related challenges. A discussion on the various methods (e.g., written retell, oral retell, comprehension questions) for assessing reading comprehension and examples of practical applications of reading comprehension assessments for classroom use are included.

The heterogeneity and interrelationships among theory of mind, executive function, and reading comprehension deficits in Hong Kong Chinese children with Autism

The heterogeneity and interrelationships among theory of mind, executive function, and reading comprehension deficits in Hong Kong Chinese children with Autism

Differentiating Reading Profiles of Children With Specific Comprehension Deficits From Skilled Readers: A Systematic Review

The primary goal of the present systematic review was to examine the criteria and measures used for assessing students with specific comprehension deficit (SCD) who have adequate decoding skills but still perform poorly on reading comprehension assessments. From a systematic review of 32 studies, we found four predominant selection approaches for classifying students with SCD and a wide range of measurements of reading skills used to distinguish students with SCD from skilled readers. In addition, to develop a reading profile for students with SCD, we performed a meta-analysis to quantify the characteristics of SCD by comparing their reading skills to those of skilled readers. Results revealed that students with SCD demonstrated deficits in oral language (i.e., vocabulary and listening comprehension) and reading comprehension, despite adequate decoding and fluency skills. Their reading comprehension deficits (Hedges’s g = −3.28) were also more severe than their oral language deficits (Hedges’s g = −0.95). We provide recommendations and implications for future researchers and classroom teachers.

Формирование навыков чтения у детей с РАС по авторской методике «Мастерская речи»

&lt;p style="text-align: justify;"&gt;Speech deficits in autism spectrum disorders (ASD) can be observed at child&amp;rsquo;s early development in the form of a deficit in understanding addressed speech, abnormal prelinguistic development, and deficits in the communicative sphere. These factors further prevent children with ASD from successful building reading skills. With all the variety of reading difficulties in children with ASD, reading comprehension problems are the most common. At the same time, it has been repeatedly shown that the deficit in reading comprehension is based on the deficit of oral speech, and the volume of the vocabulary and the level of mastering the syntactic norms of the language play a big role. The colleagues of the Federal Resource Center for the Organization of Comprehensive Support to Children with ASD (FRC MSUPE) developed the author&amp;rsquo;s method called &amp;laquo;Speaking Skills&amp;raquo;. It is aimed at developing reading skills in children with ASD. The method is intended for teaching preschoolers and younger schoolchildren in groups. The article describes the method implementation step by step, give the scheme of a typical lesson, as well as the criteria for assessing skills necessary for mastering the reading. We provide examples of original didactic materials that allow the child to &amp;ldquo;read&amp;rdquo; the sentence, knowing the minimum number of letters. It increases the child&amp;rsquo;s interest and motivation for classes. The technique of relying on one letter, which is a lexically significant unit, creates an attitude to reading as a process of extracting meaning, which increases learning effectiveness. It also describes how to adapt the program to the special educational needs of children with ASD: organization of educational environment; adaptation and the way of introducing the materials; coping with leading developmental challenges. The design of the planned pilot study of the effectiveness of the presented methodology is described. Thus, using the method &amp;ldquo;Speaking Skills&amp;rdquo; allow not only to more successfully master reading skills, but also to fill in the deficiencies in the communicative and social sphere.&lt;/p&gt;

A meta-analytic review of comprehension deficits in students with dyslexia.

Beyond the established difficulties of individuals with dyslexia in word recognition and spelling, it remains unclear how severe their difficulties in comprehension are. To examine this, we performed a meta-analytic review. A random-effects model analysis of data from 76 studies revealed a large deficit in reading comprehension in individuals with dyslexia compared to their chronological-age (CA) controls (g = 1.43) and a smaller one compared to their reading-level (RL) matched controls (g = 0.64). Individuals with dyslexia also differed significantly from their CA controls in listening comprehension (g = 0.43). Results further showed significant heterogeneity in the effect sizes that was partly explained by orthographic consistency (the deficits were larger in languages with low orthographic consistency) and vocabulary matching (the deficits were larger in studies in which the groups were not matched on vocabulary). These findings suggest, first, that individuals with dyslexia experience significant difficulties in both reading and listening comprehension, but the effect sizes are smaller than those reported in the literature for word reading and spelling. Second, our findings suggest that the deficits in reading comprehension are likely a combination of deficits in both decoding and oral language skills.

A model-based meta-analytic examination of specific reading comprehension deficit: how prevalent is it and does the simple view of reading account for it?

Many individuals with poor reading comprehension have levels of reading comprehension that are consistent with deficits in their ability to decode the words on the page. However, there are individuals who are poor at reading comprehension despite being adequate at decoding. This phenomenon is referred to as specific reading comprehension deficit (SRCD). The two purposes of this study were to use a new approach to estimate the prevalence of SRCD and to examine the extent to which SRCD can be explained by the simple view of reading. We used model-based meta-analysis of correlation matrices from standardized tests to create composite correlation matrices for the constructs of reading comprehension, decoding, and listening comprehension. Using simulated datasets generated from the composite correlation matrices, we used residuals from regressing reading comprehension on decoding to create a continuous index of SRCD. The prevalence of SRCD is best represented not as a single number but as a continuous distribution in which prevalence varies as a function of the magnitude of the severity of the deficit in reading comprehension relative to the level of decoding. Examining the joint distribution of the residuals with reading comprehension makes clear that the phenomenon of reading comprehension that is poor relative to decoding occurs throughout the distribution of reading comprehension skill. Although the simple view of reading predictors of listening comprehension and decoding makes significant contributions to predicting reading comprehension, nearly half of the variance is unaccounted for.

Basic reading and reading-related language skills in adults with deficient reading comprehension who read a transparent orthography

This study set out to examine the basic reading skills (accuracy and fluency in decoding, word and text reading) and some of the reading-related language skills (phonological awareness and rapid-naming) of 54 adults with low reading comprehension, who read the transparent German orthography. Participants were born in Germany and showed a typical non-verbal processing speed. With the exception of reading accuracy, participants were expected to present deficits in all basic reading and reading-related skills. The average performance in measures of decoding and word reading fluency was extremely low. A notable proportion of the sample, however, did not present a deficit in these measures. As expected, the average rate of reading errors was generally low. Nevertheless, text reading accuracy was deficient for one quarter of the sample. Tests addressing the reading-related language skills also indicated an average low performance in phonological awareness, but not in rapid-naming. Here too, a notable variance was observed. These results suggest that deficits in the basic reading skills and in phonological awareness characterise, on average, adults with low reading comprehension. At the same time, significant deficits in reading comprehension in this population do not necessarily imply deficits in the more basic skills of reading as well. In addition, the results indicate that reading accuracy constitutes a source of difficulty for some of these adults, despite the reading of a transparent orthography. The sources for the variance in performance throughout the different reading and reading-related measures remain to be explored.

Does Embedding Restricted Interests of Students with Autism in Text Improve Reading Comprehension?

ABSTRACT Reading comprehension deficits are common for students with Autism Spectrum Disorder (ASD) but there are few studies that have examined specific strategies for teaching reading comprehension to this population. The current study investigated the effect of embedding the restricted interests (RI) of two high school students with ASD in text on reading comprehension performance using a single-subject, multi-element research design. Neither participant showed an increase in the number of relevant words shared during oral retell and only one participant showed an increase in the percent of correctly answered reading comprehension questions. Embedding the RI in text more frequently did not impact reading comprehension performance. The results indicate there are potential variables that may limit the effect of embedding the RI of students with ASD in text on reading comprehension.

Eye Tracking Measures for Studying Language Comprehension Deficits in Aphasia: A Systematic Search and Scoping Review.

Aim The aim of this scoping review is to identify the eye tracking paradigms and eye movement measures used to investigate auditory and reading comprehension deficits in persons with aphasia (PWA). Method MEDLINE via PubMed, Cochrane, CINAHL, Embase, PsycINFO, OTseeker, Scopus, Google Scholar, Grey Literature Database, and ProQuest Search (Dissertations & Theses) were searched for relevant studies. The Covidence software was used to manage the initial and full-text screening process for the search. Results and Discussion From a total of 1,803 studies, 68 studies were included for full-text screening. In addition, 418 records from gray literature were also screened. After full-text screening, 16 studies were included for this review-12 studies for auditory comprehension in PWA and four studies for reading comprehension in PWA. The review highlights the use of common eye tracking paradigms used to study language comprehension in PWA. We also discusse eye movement measures and how they help in assessing auditory and reading comprehension. Methodological challenges of using eye tracking are discussed. Conclusion The studies summarized in this scoping review provide evidence that the eye tracking methods are beneficial for studying auditory and reading comprehension in PWA.

Examining the Reading and Cognitive Profiles of Students With Significant Reading Comprehension Difficulties.

This study investigated the word reading and listening comprehension difficulties of fourth-grade students with significant reading comprehension deficits and the cognitive difficulties that underlie these weaknesses. Latent profile analysis was used to classify a sample of fourth-grade students (n = 446) who scored below the 16th percentile on a measure of reading comprehension into subgroups based on their performance in word reading (WR) and listening comprehension (LC). Three latent profiles emerged: (a) moderate deficits in both WR and LC of similar severity (91%), (b) severe deficit in WR paired with moderate LC deficit (5%), and (c) severe deficit in LC with moderate WR difficulties (4%). Analyses examining the associations between cognitive attributes and group membership indicated students with lower performance on cognitive predictors were more likely to be in a severe subgroup. Implications for educators targeting improved reading performance for upper elementary students with significant reading difficulties were discussed.

Building Meaning: Meta-analysis of Component Skills Supporting Reading Comprehension in Children with Autism Spectrum Disorder.

The ability to understand what one reads, or reading comprehension, is central to academic success. For many children with autism spectrum disorder (ASD), reading comprehension is a noted area of challenge. For children with typical development, it is well established that successful reading comprehension requires two broad skills: word reading and oral language. For children with ASD, word reading is often believed to be relatively intact, even in the face of poor reading comprehension, suggesting that deficits in oral language, more than in word reading, underlie reading comprehension deficits. Yet, extant research has suggested the importance of both skills. To clarify the role of these skills in the reading comprehension of children with ASD, we conducted a meta-analysis. ERIC, PsycINFO, PubMed, and Proquest Dissertation & Theses were searched for studies of reading comprehension in children with ASD, published up to May 2019. We identified 26 relevant studies about children with ASD (aged 6-18 years) that included both a measure of word reading and reading comprehension. Hunt-Schmidt Random Effects Models showed similar mean correlations between reading comprehension and the component skills of word reading (M r=0.65 [0.27-1.03]) and oral language (M r=0.61 [0.33-0.88]). These findings demonstrate that these skills are essential for reading comprehension in children with ASD, making contributions of similar size. This study advances our understanding of the mechanisms by which children with ASD understand what they read, providing a foundation on which to build programmatic research into each of these mechanisms. LAY SUMMARY: Academic progress is closely tied to children's ability to understand what they read. Yet reading comprehension is difficult for many children with autism spectrum disorder (ASD). We used a statistical method to summarize existing research on the skills that children with ASD use to understand what they read. We found that the reading comprehension of children with ASD was related to a similar extent to both their ability to read individual words and their oral language skills. These findings suggest that both areas should be assessed in order to determine appropriate interventions to support reading comprehension for children with ASD. Autism Res 2021, 14: 840-858. © 2021 International Society for Autism Research, Wiley Periodicals LLC.

Literacy-supporting skills in college students with specific reading comprehension deficit and developmental language disorder.

Specific reading comprehension deficit (S-RCD) and developmental language disorder (DLD) are both commonly occurring developmental disorders of language. The ways in which these disorders do and do not overlap during childhood are a matter of debate (Nation & Norbury, 2005). Moreover, in both populations, the challenges faced by individuals in adulthood are understudied. Here, we combined data across cohorts of college students, and classified individuals with only S-RCD (n = 20), only DLD (n = 55), and co-occurring S-RCD and DLD (n = 13). Individuals with good language and reading skills, who matched those with S-RCD on decoding, comprised our typical language and reading group (TD; n = 20). Beyond the measures used for classification, group-level differences were identified in sentence-level reading fluency, phonological processing, verbal working memory, and rapid automatized naming. We found that skill profiles differed across groups; however, we found no evidence of weaknesses beyond the core deficit in reading comprehension observed in those with only S-RCD. In contrast, when S-RCD co-occurs with DLD, weaknesses are observed in phonological processing, as well as reading fluency and verbal working memory. These findings suggest that some adults with S-RCD have co-occurring DLD as a core weakness. These findings, as well as differences between individuals with S-RCD and DLD, are further discussed.

Emergent Bilinguals With Specific Reading Comprehension Deficits: A Comparative and Longitudinal Analysis

This study centered on emergent bilingual (EB) students with specific reading comprehension deficits (S-RCD), that is, with poor reading comprehension despite solid word identification skills. The participants were 209 students in Grades 2 to 4, including both EBs and English monolinguals (EMs) with and without S-RCD. Mean comparisons indicated that EBs and EMs with S-RCD showed weaknesses relative to typically developing (TD) readers in oral language, word identification, inference making, and reading engagement, but not in executive functioning. Longitudinal analyses indicated that across two academic years S-RCD persisted for 41% of EBs and EMs alike. Altogether, the study extends research on EBs with S-RCD by identifying variables beyond oral language that may account for their reading comprehension difficulties and providing insight into the extent to which their reading comprehension and word identification performance levels evolve during elementary school. Furthermore, the findings point to the importance of early identification and intervention for weaknesses in reading comprehension and its component elements in both EBs and EMS.

Distinct neural substrates of individual differences in components of reading comprehension in adults with or without dyslexia

Reading comprehension is a complex task that depends on multiple cognitive and linguistic processes. According to the updated Simple View of Reading framework, in adults, individual variation in reading comprehension can be largely explained by combined variance in three component abilities: (1) decoding accuracy, (2) fluency, and (3) language comprehension. Here we asked whether the neural correlates of the three components are different in adults with dyslexia as compared to typically-reading adults and whether the relative contribution of these correlates to reading comprehension is similar in the two groups. We employed a novel naturalistic fMRI reading task to identify the neural correlates of individual differences in the three components using whole-brain and literature-driven regions-of-interest approaches. Across all participants, as predicted by the Simple View framework, we found distinct patterns of associations with linguistic and domain-general regions for the three components, and that the left-hemispheric neural correlates of language comprehension in the angular and posterior temporal gyri made the largest contributions to explaining out-of-scanner reading comprehension performance. These patterns differed between the two groups. In typical adult readers, better fluency was associated with greater activation of left occipitotemporal regions, better comprehension with lesser activation in prefrontal and posterior parietal regions, and there were no significant associations with decoding. In adults with dyslexia, better fluency was associated with greater activation of bilateral inferior parietal regions, better comprehension was associated with greater activation in some prefrontal clusters and lower in others, and better decoding skills were associated with lesser activation of bilateral prefrontal and posterior parietal regions. Extending the behavioral findings of skill-level differences in the relative contribution of the three components to reading comprehension, the relative contributions of the neural correlates to reading comprehension differed based on dyslexia status. These findings reveal some of the neural correlates of individual differences in the three components and the underlying mechanisms of reading comprehension deficits in adults with dyslexia.