Revisiting the definition of dyslexia.

The International Dyslexia Association definition of dyslexia was updated 20 years ago and has been referenced frequently in research and practice. In this paper, researchers from the Florida Center for Reading Research consider the components of the definition and make recommendations for revisions. These include recognizing the persistence of word-reading, decoding, and spelling difficulties, acknowledging the multifactorial causal basis of dyslexia, clarifying exclusionary factors, and denoting comorbidity with other developmental disorders. It is also suggested that the academic and psychosocial consequences of dyslexia be highlighted to reinforce a preventive service delivery model. Lastly, the inclusion of dyslexia within a specific learning disability category is supported.

Comparing the Predictive Utility of Parent and Teacher Reports of Externalizing Behaviors on Concurrent Academic Achievement in Preschool-Aged Children.

Discrepancies between teacher and parent reports of children's externalizing behaviors are well documented. However, less research has examined the associations these different ratings have with objective indicators of functioning in other domains. The goal of this study was to compare the strength of association of parent and teacher reports of externalizing behaviors with children's early academic skills. The sample consisted of 695 children (376 boys, 318 girls, 1 unknown) who ranged between 48 months and 63 months of age (mean age = 55.05; SD = 3.63) at time of initial assessment. Children completed standardized measures of early academic skills; parents and teachers completed the Conners Rating Scale. Steiger's Z tests were performed to compare the strength of associations between parent and teacher ratings on children's early academic skills. Multi-level regressions examined the unique predictive variance each rater accounted for. Teacher ratings of inattentive and oppositional defiant behaviors had stronger associations with children's early academic skills than did parent ratings for most measures of early academic skills, but there were no significant differences for ratings of hyperactive/impulsive behaviors. Multivariate analyses revealed that only teacher ratings of inattentive behaviors accounted for notable portions of unique variance in early academic skills. Children's externalizing behaviors were related to their early academic skills. However, these results suggest that teachers contributed more unique variance, possibly due to their access to a normative reference group.

Early Identification of Children with Dyslexia: Variables Differentially Predict Poor Reading Versus Unexpected Poor Reading.

Definitions of dyslexia typically make reference to unexpected poor reading, although how best to operationalize unexpected remains an issue. When operationally defined as reading below expectations based on level of oral language, cases of unexpected poor reading make up fewer than half of cases of poor reading, and cases of unexpected poor reading occur throughout the range of reading proficiency. An implication is that what optimally predicts poor reading may not optimally predict unexpected poor reading. The goal of the three presented studies was to test this implication empirically. In Study 1, a model-based meta-analysis, phonological awareness accounted for 40% of the variance in decoding but only 1% of the variance in decoding that was unexpected based on level of vocabulary. Conversely, unexpected phonological awareness accounted for 34% of the variance in unexpected decoding but only 1% of the variance in decoding. An analogous pattern of results occurred for reading comprehension. In Study 2, a study of 766 children in kindergarten, first grade, and second grade, latent variables were used to represent oral vocabulary, phonological awareness, and decoding. As was seen in Study 1, unexpected decoding was better predicted by unexpected phonological awareness than by phonological awareness. In Study 3, a longitudinal study of 1,025 children followed from preschool through grade 2, the pattern of results mirrored those of Studies 1 and 2. An important implication of these studies is that typical assessments may be better at identifying poor reading than they are at identifying unexpected poor reading or dyslexia.

Dimensionality of Oppositional Defiant Disorder Symptoms Across Elementary-School Grades.

Various models of the dimensionality of behaviors associated with Oppositional Defiant Disorder (ODD) have been proposed or reported. Many of these models describe ODD-related behaviors in either two- or three-factor models. The purpose of the study was to determine which of the models of ODD-related behaviors demonstrated the best fit using teacher report of 15,521 children across eight grade levels and to examine measurement invariance of the model across grades. Confirmatory factor analyses were conducted to determine which of the models demonstrated best fit of teacher-reported ODD-related behaviors across eight grades. A two-factor model from a preliminary analysis of a subset of the current data demonstrated a better model fit than any of the existing six models examined and demonstrated measurement invariance across all grades. Across all of the models, affective and behavioral symptoms loaded onto separate factors, which may be an important consideration to inform future clinical and empirical work.

"Factor structure and utility of the Behavior Rating Inventory of Executive Function-Preschool Version": Correction.

Reports an error in "Factor structure and utility of the Behavior Rating Inventory of Executive Function-Preschool Version" by Jamie A. Spiegel, Christopher J. Lonigan and Beth M. Phillips (Psychological Assessment, 2017[Feb], Vol 29[2], 172-185). In the original article, paraphrased references to the BRIEF-P test items originally provided in Table 2 have been removed by request of the copyright holder due to discrepancies between the APA guidelines and the copyright holder's internal policies. The online version of this article has been corrected. (The following abstract of the original article appeared in record 2016-22451-001). Executive function (EF) is a domain general cognitive construct associated with a number of important developmental outcomes. The Behavior Rating Inventory of Executive Function-Preschool version (BRIEF-P) is intended to assess 5 distinct components of EF in preschool age children. In this study, a series of factor analyses was conducted with teacher-reported EF of 2,367 preschool students to assess the structure of the BRIEF-P, and the predictive relations between the resulting factors and children's academic abilities and behavioral self-regulation were assessed to test the construct and convergent validity of the BRIEF-P scores. Results yielded mixed findings concerning the structure of the BRIEF-P and validity of its resultant scores. Results of the factor analyses indicated that the items of the BRIEF-P did not map onto factors in the way that would be expected based on its item-to-subscale mapping. The best solutions were a 4-factor and a bifactor model. The 4-factor solution revealed substantial correlations between factors, and although the bifactor solution identified a General Self-Regulation factor that explained variance in responses across items, this general factor did not account for all of the overlap among specific factors. Analyses of the relations for the factors from the correlated-factors and the bifactor models indicated that the majority of the factors had limited convergent validity with academic ability or with a measure of behavior self-regulation. Overall, these findings call into question the validity of aspects of BRIEF-P. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

What components of working memory are associated with children's reading skills?

Working memory (WM) is a potentially important factor related to the development of and performance in reading skills. This study examined the differential relations between two components of the WM system (i.e., storage, processing) and reading. Latent variables were created based on data from 1900 children (1146 children in preschool-second grade and 754 children in third-fifth grade) recruited for a larger study concerning the development of reading comprehension. Results indicated that a general-specific model of WM was a good fit to the data and effectively isolated the variance unique to WM-processing from that of WM-storage. Using the general-specific model, relations between the components of WM and reading (e.g., reading comprehension, decoding) and reading-related (e.g., oral language, phonological awareness, nonverbal IQ) outcomes were examined. In contrast with previous studies that have suggested WM is consistently associated with reading comprehension, our findings indicate that both aspects of WM (i.e., storage, processing) operate primarily indirectly through foundational reading-related skills. In sum, the WM system is not specifically associated with reading comprehension as most of the effects of WM-processing are indirect via the effects on foundational reading-related skills.

The effect of stimulant medication on the learning of academic curricula in children with ADHD: A randomized crossover study.

OBJECTIVE: Evaluate whether stimulant medication improves acquisition of academic material in children with attention deficit hyperactivity disorder (ADHD) receiving small-group, content-area instruction in a classroom setting. METHOD: Participants were 173 children between the ages of 7 and 12 years old (77% male, 86% Hispanic) who met Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) criteria for ADHD and were participating in a therapeutic summer camp. The design was a triple-masked, within-subject, AB/BA crossover trial. Children completed two consecutive phases of daily, 25-min instruction in both (a) subject-area content (science, social studies) and (b) vocabulary. Each phase was a standard instructional unit lasting for 3 weeks. Teachers and aides taught the material to small groups in a summer classroom setting. Each child was randomized to be medicated with daily osmotic-release oral system methylphenidate (OROS-MPH) during either the first or second of the instructional phases, receiving placebo during the other. RESULTS: Medication had large, salutary, statistically significant effects on children's academic seatwork productivity and classroom behavior on every single day of the instructional period. However, there was no detectable effect of medication on learning the material taught during instruction: Children learned the same amount of subject-area and vocabulary content whether they were taking OROS-MPH or placebo during the instructional period. CONCLUSIONS: Acute effects of OROS-MPH on daily academic seatwork productivity and classroom behavior did not translate into improved learning of new academic material taught via small-group, evidence-based instruction. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Does preschool children's self-regulation moderate the impacts of instructional activities? Evidence from a randomized intervention study.

There is strong evidence linking children's self-regulation with their academic and behavioral outcomes. These relations have led to the development of interventions aimed at improving academic outcomes by promoting self-regulation, based in part on the idea that self-regulation promotes the development of academic skills. Although a considerable number of studies have examined the degree to which interventions designed to improve aspects of self-regulation have a positive impact on academic outcomes, only a few studies have examined the degree to which children's self-regulation moderates the effects of academic interventions. The goal of this study was to examine whether self-regulation, indexed by a direct assessment of executive function and teacher-rated attention, moderated the uptake of early literacy interventions for 184 children (average age = 58 months, SD = 3.38; 66% Black/African American, 28% White; 59% male) at risk for reading difficulties who participated in a randomized controlled trial examining the efficacy of Tier 2 interventions in preschool. Multilevel models were used to examine the degree to which children's self-regulation moderated the impacts of the interventions. The results of this study provided little evidence that self-regulation moderated the impacts of the interventions and call into question the likelihood of a causal relation between self-regulation and academic achievement.

Examining the Relations between Preschooler's Externalizing Behaviors and Academic Performance Using an S-1 Bifactor Model.

Externalizing behaviors are associated with poor academic outcomes in community-based samples of children as young as preschool-age. However, there remains debate as to which specific externalizing dimensions link externalizing behaviors to early academic skills. Recently, research has supported the use of S-1 bifactor models to examine the hierarchical structure of externalizing behaviors and the unique relations between externalizing factors and academic impairment in samples of school-age children. The primary goals of this study were to extend the age range at which S-1 bifactor models are applied to externalizing behaviors and to determine if factors derived from an S-1 bifactor model had differing relations to early academic skills. In this study, the early academic skills of 1,356 preschool-age children (mean age = 49.98 months; SD = 8.08) were assessed, and preschool and childcare teachers rated children's externalizing behaviors. Results indicated that an S-1 bifactor model with a Hyperactive-Impulsive reference factor yielded the best-fitting model for preschool-age children's externalizing behaviors. Structural models revealed that both the Hyperactive-Impulsive reference factor and the Inattention factor uniquely predicted preschool children's early academic skills. The degree to which the results applied across the primary groups in the sample (i.e., White versus Black/African American children, girls versus boys) was examined for measurement and structural models.

Executive Function, Language Dominance and Literacy Skills in Spanish-speaking Language-minority Children: A Longitudinal Study.

In the U.S., children whose home language is Spanish are at increased risk for the development of reading difficulties. Studies have reported a link between executive function (EF) and reading; few studies have examined this linkage in Spanish-speaking language-minority (LM) children. This longitudinal study examined the association between preschool EF and kindergarten reading-related skills in 241 Spanish-speaking LM children (M-age in preschool = 54.23 months, SD = 6.17). In preschool, children completed measures of inhibitory control (IC) and working memory (WM) in their dominant language, and early literacy skills in Spanish and English. In the fall of their kindergarten year, children completed code- and language-related literacy measures in both languages. A two-factor model (IC and WM) accounted for children's preschool EF. Most zero-order correlations between EF factors and kindergarten outcomes in Spanish (rs = .03-.40) and English (rs = .05-.35) were statistically significant. For English-language outcomes, WM was more strongly associated with code-related skills and IC with language-related skills; for Spanish-language outcomes, WM was more strongly related to both code- and language- related skills than IC. There was little difference in the associations between EF and reading outcomes based on the language in which EF was measured (i.e., the child's dominant language). When controlling for early literacy skills in the same language as the kindergarten outcomes, EF contributed significant unique variance to kindergarten skills in English but not in Spanish. For Spanish language outcomes, early literacy skills appear to mediate the role of preschool EF. The results suggest that children's development in cognitive domains, such as EF, may have an important role in the acquisition of core early reading skills for Spanish-speaking LM children.

Influences of the Home Language and Literacy Environment on Spanish and English Vocabulary Growth among Dual Language Learners.

Little is known regarding the extent to which aspects of the home language and literacy environment (HLE) promote growth in language skills among dual language learners (DLLs). Therefore, the purpose of this study was to evaluate which aspects of the HLE significantly predict growth in English and Spanish vocabulary among Spanish-speaking DLLs. 944 Spanish-speaking DLLs (51.6% female; mean age = 53.77 months) completed assessments of English and Spanish vocabulary at four time points across two academic years. Parents completed a survey of the HLE that included information on language exposure, reading exposure, and family reading habits. Results indicated that specific literacy-related practices, including availability of books in the home, language read to the child, and parental reading skills were significant predictors of growth in children's Spanish and English vocabulary knowledge, even after controlling children's initial level of language skills and family socioeconomic status.

Relations between executive functions and academic outcomes in elementary school children: A meta-analysis.

The primary goal of this study was to examine developmental patterns among the relations between components of executive function (EF; working memory [WM], inhibitory control, shifting), and academic outcomes (reading, mathematics, language) in elementary school-age children. These relations were examined within the context of the development of EF and of academic skills utilizing an extension of the unity and diversity, intrinsic cognitive load, and dual process theories. Using meta-analytic methods, we summarized results from 299 studies from 293 articles/dissertations, representing 65,605 elementary school-age children (42-191 months old [M = 101 months, SD = 24.49 months]). Results indicated that accounting for general EF (by including the correlations among EF tasks in meta-analytic path models and accounting for effects between all three EF components and academic outcomes simultaneously) produced weaker relations between EF and academic skills than the bivariate relations which have been reported in prior meta-analytic reviews. However, although reduced, all relations between EF and academic outcomes remained significant throughout elementary school. Whereas WM was consistently moderately associated with reading, math, and oral language across development, the developmental trends for the relations between inhibitory control and shifting with academic outcomes varied based upon the academic skill examined. On the academic side, whereas the relations between reading and language skills with EF components varied throughout elementary school, few developmental changes were found in the relations between EF components and math skills across elementary school. Future directions and implications of findings for the conceptualization of the impact of EF on academics are discussed within the context of relevant theoretical models. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Differential Patterns of Growth in Reading and Math Skills during Elementary School.

This study investigated developmental trajectories of reading and math using latent-growth-curve analyses across multiple academic skills, measures, and multiple time periods within a single sample. Reading-related growth was marked by significant individual differences during the early elementary-school period and non-significant individual differences during the late elementary-school period. For math-related skills, non-significant individual differences were present for early math growth and significant individual differences were present in late elementary-school. No clear pattern of cumulative, compensatory, or stable development emerged for either reading-related or math skills. These differing growth patterns highlight developmental complexities and suggest domain-specific differences in achievement growth that are potentially associated with contextual factors.

Do Parent and Teacher Ratings of ADHD Reflect the Same Constructs? A Measurement Invariance Analysis.

Discrepancies between parent and teacher ratings of problem behaviors related to Attention-Deficit/Hyperactivity Disorder (ADHD) are reported frequently. Previous studies have hypothesized that these discrepancies are the results of various informant biases and have evaluated whether the rating scales are measuring behaviors the same way across informants. The purpose of this study was to evaluate if two rating scales of ADHD behavior, the Strengths and Weaknesses of ADHD Symptoms and Normal Behavior Rating Scale (SWAN) and the Conners' Teacher Rating Scale-15 (CTRS-15), reflected the same underlying constructs across parent and teacher report. Measurement invariance analyses were conducted using parent and teacher report data from a sample of 1,645 preschool to fifth-grade children (age range 46 to 169 months) that was comprised of roughly equal number of boys and girls and had racial/ethnic diversity similar to the community (i.e., 61% White, 22% Black/African American; 4% Hispanic/Latino). Although it was hypothesized that both rating scales would demonstrate measurement invariance across parent and teacher report, at least partial weak measurement invariance was only supported for the CTRS-15 across all grade groups. These results indicate that the meaning of any rating discrepancies on the SWAN are unknown because it is not reflective of the same underlying constructs across parents and teachers across all of the examined grade groups. In general, these results have potentially important implications regarding research on ADHD symptoms and related behaviors, and raise questions regarding the utility and measurement of ADHD symptoms.

A randomized controlled trial of central executive training (CET) versus inhibitory control training (ICT) for ADHD.

OBJECTIVE: Executive function deficits are well-established in ADHD. Unfortunately, replicated evidence indicates that executive function training for ADHD has been largely unsuccessful. We hypothesized that this may reflect insufficient targeting, such that extant protocols do not sufficiently and specifically target the neurocognitive systems associated with phenotypic ADHD behaviors/impairments. METHOD: Children with ADHD ages 8-12 (M = 10.41, SD = 1.46; 12 girls; 74% Caucasian/Non-Hispanic) were randomized with allocation concealment to either central executive training (CET; n = 25) or newly developed inhibitory control training (ICT; n = 29). Detailed data analytic plans were preregistered. RESULTS: Both treatments were feasible/acceptable based on training duration, child-reported ease of use, and parent-reported high satisfaction. CET was superior to ICT for improving its primary intervention targets: phonological and visuospatial working memory (d = 0.70-0.84). CET was also superior to ICT for improving go/no-go (d = 0.84) but not stop-signal inhibition. Mechanisms of change analyses indicated that CET-related working memory improvements produced significant reductions in the primary clinical endpoints (objectively assessed hyperactivity) during working memory and inhibition testing (indirect effects: ß ≥ -.11; 95% CIs exclude 0.0). CET was also superior to ICT on 3 of 4 secondary clinical endpoints (blinded teacher-rated ADHD symptoms; d = 0.46-0.70 vs. 0.16-0.42) and 2 of 4 feasibility/acceptability clinical endpoints (parent-reported ADHD symptoms; d = 0.96-1.42 vs. 0.45-0.65). CET-related gains were maintained at 2-4 month follow-up; ICT-related gains were maintained for attention problems but not hyperactivity/impulsivity per parent report. CONCLUSIONS: Results support the use of CET for treating executive function deficits and targeting ADHD behavioral symptoms in children with ADHD. Findings for ICT were mixed at best and indicate the need for continued development/study. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

How the Science of Reading Informs 21st-Century Education.

The science of reading should be informed by an evolving evidence base built upon the scientific method. Decades of basic research and randomized controlled trials of interventions and instructional routines have formed a substantial evidence base to guide best practices in reading instruction, reading intervention, and the early identification of at-risk readers. The recent resurfacing of questions about what constitutes the science of reading is leading to misinformation in the public space that may be viewed by educational stakeholders as merely differences of opinion among scientists. Our goals in this paper are to revisit the science of reading through an epistemological lens to clarify what constitutes evidence in the science of reading and to offer a critical evaluation of the evidence provided by the science of reading. To this end, we summarize those things that we believe have compelling evidence, promising evidence, or a lack of compelling evidence. We conclude with a discussion of areas of focus that we believe will advance the science of reading to meet the needs of all children in the 21st century.

Examining the Relations of the Home Literacy Environments of Families of Low SES with Children's Early Literacy Skills.

This study examined variability of the home literacy environment (HLE) using multiple measures among families of low SES. The relations of the measures to each other and to children's early oral language skills and print knowledge were reported. Considerable variability of the self-reported HLE items and the Children's Title Checklist (CTC) but low correlations were found among items. Children's expressive language skills were predicted by the CTC. The number of storybooks in the home predicted variance within children's receptive vocabulary. Concepts about Print (CAP) scores were predicted by the primary caregivers' frequency of shared reading and the age when parents began reading to children. Children's letter name scores were not associated with any of the HLE measures in this study. The research provides additional information about the HLE within the homes of low SES using multiple measures and how they relate differentially to children's early language and literacy skills.

Dimensionality of Preschoolers' Informal Mathematical Abilities.

Recent research examining children's early mathematical abilities has focused primarily on number and operations (e.g., counting, addition) with considerably less attention directed to the role of other possible dimensions of early mathematical abilities, such as, measurement, geometry, and patterning. The current study examined the dimensionality of informal mathematical abilities by conducting categorical confirmatory factor analysis (CCFA) using data from a large sample of preschool children from low-income families (N=1630; Mean age = 4.46 years, SD = .37) using the Child Math Assessment (CMA; Klein & Starkey, 2004). The best fitting model consisted of four factors of Number and Operations, Measurement, Geometry, and Patterning, with the Number and Operations factor explaining common variance in three first-order factors of Numbering, Operations, and Relations. These findings support the view that informal mathematical knowledge is a multi-dimensional construct comprised of each of these separable dimensions. Additionally, a Multiple Indicators Multiple Causes model was used to determine if mathematical ability differed for male and female preschoolers on each of the four factors or on each of the 35 items of the CMA. Results showed no differences for mathematical abilities between males and females at this age. Future research and curricular implications are discussed.

Stability of Risk Status During Preschool.

The current study investigated the stability of children's risk status across the preschool year. A total of 1,102 preschool children attending Title 1 schools ( n = 631) and non-Title 1 schools ( n = 471) participated in this study. Using averaged standard scores for two measures of language, print knowledge, and phonological awareness administered at the beginning of preschool (Time 1) and midyear (Time 2), children were classified as at-risk or not at each time point. Prevalence rates were determined for four categories of risk status: (1) always at risk, (2) only at risk at Time 1, (3) never at risk, and (4) only at risk at Time 2. Univariate and multivariate analyses indicated that the best predictor of children's risk status was their level of skill in the respective literacy domain at the beginning of preschool. These results suggest that children with stable risk can be identified early and may benefit from the early provision of extra instructional support within a response-to-instruction framework.

Examination of the Structure and Measurement of Inattentive, Hyperactive, and Impulsive Behaviors from Preschool to Grade 4.

Attention Deficit/Hyperactivity Disorder (ADHD) is a complex and heterogeneous disorder consisting of inattentive and hyperactive/impulsive behaviors. Although, the multidimensionality of ADHD is widely accepted, questions remain regarding the extent to which the components of this disorder are overlapping or distinct. Further, although the same measures are generally used to assess inattentive, hyperactive, and impulsive behaviors across childhood, it has been argued that the structure and measurement of inattentive, hyperactive, and impulsive behaviors may be susceptible to developmental influences. The purpose of this study was to examine the factor structure and measurement invariance of inattentive and hyperactive/impulsive behaviors in a large group of children (N = 10,047) ranging in grade level from preschool to grade 4. A bifactor model with a general factor and two specific factors of inattention and hyperactivity/impulsivity fit the data best. This finding held across all groups and all grade levels. In general, the bifactor model demonstrated measurement invariance from kindergarten through grade 4 but not for preschool. Implications for the understanding and measurement of inattentive, hyperactive, and impulsive behaviors across early and middle childhood are discussed.