Reading and cognitive abilities: Longitudinal studies of brain and behavior changes in young children

This paper focuses on methods useful for identifying differences in the development of language reading abilities in children that rely on measures of brain responses and behavioral assessments. Findings from longitudinal and cross-sectional studies using brain and behavior measures are described, along with findings from research designed to influence changes in brain and behavioral responses through training. The findings show differences in event-related potentials (ERP) responses recorded at birth that are related to a child’s later performance on language and reading tasks. Such findings point to a strong biological influence on the development of language and reading skills. However, other findings show that the influence of biological factors on brain processing can be modified through learning. In fact, several studies show that even brief periods of stimulation and opportunities for learning can produce changes in the brain’s ERP repsonses. Such findings suggest that new approaches to evaluating the effectiveness of interventions might change the rate and likelihood of developmental changes.     

Newborn and preschool predictors of second-grade reading scores: an evaluation of categorical and continuous scores

This study examined how the development of foundation skills in speech perception, language, short-term memory, and family demographics and activities in the home environment influence the development of reading skills. Data from 96 children participating in a longitudinal research project were used. It was hypothesized that measures of specific foundation skills in the preschool period and measures of family demographics and home environment could be used to identify children's reading abilities. As expected, most of the foundation skills were found to be related to and predictive of reading scores. Event-related potential (ERP) measures of speech perception, which have previously been found to be predictive of reading abilities, and measures of family and home activities and language measures were related to reading scores. Verbal short-term memory scores contributed little to the prediction of reading scores. These variables influenced the results whether they were used to discriminate reading groups or to predict a continuum of reading scores, but there were large differences in the amount of variance accounted for. More variance was accounted for in the group analyses than in the continuum analyses.     

Early cognitive and home environmental predictors of reading fluency and reading comprehension in Turkish-speaking children

In this study, we aimed to determine the early cognitive and home environmental predictors of reading in Turkish-speaking children. A total of 362 children participated in the study. We monitored the children for 3 years and assessed the home environmental variables and cognitive skills in kindergarten, reading fluency at the end of the first grade, and reading comprehension at the end of the second grade. We found that home literacy environment and socioeconomic status predicted early literacy skills in kindergarten as they also predicted reading fluency and reading comprehension through early literacy in later years. In addition, we found that phonological awareness, letter knowledge, and rapid naming predicted reading fluency, while language and verbal working memory predicted reading comprehension. The results of the study showed us that it is important to consider reading and reading comprehension in Turkish-speaking children holistically, together with cognitive skills and home environmental variables.     

The role of sentence recall in reading and language skills of children with learning difficulties

The present study explores the relationship between sentence recall and reading and language skills in a group of 7–11-year-old children with learning difficulties. While recent studies have found that performance on sentence recall tasks plays a role in learning, it is possible that this contribution is a reflection of shared resources with working memory. In order to investigate whether sentence recall was uniquely associated with reading and language skills, differences associated with IQ and working memory capacity were statistically controlled. A sample of 72 children was tested on measures of verbal complex memory, verbal short-term memory, sentence recall, expressive vocabulary, verbal and performance IQ, reading and language skills. Both sentence recall and verbal complex memory shared unique links with reading skill, and sentence recall was uniquely associated with language skills. This finding indicates that resources in long-term memory also play an important diagnostic role in reading and language abilities. The implications for educational practice are discussed.     

The Home Literacy Environment Is a Correlate,but Perhaps Not a Cause,of Variations in Children’s Language and Literacy Development

The home literacy environment is a well-established predictor of children’s language and literacy development. We investigated whether formal, informal, and indirect measures of the home literacy environment predict children’s reading and language skills once maternal language abilities are taken into account. Data come from a longitudinal study of children at high risk of dyslexia (N = 251) followed from preschool years. Latent factors describing maternal language were significant predictors of storybook exposure but not of direct literacy instruction. Maternal language and phonological skills respectively predicted children’s language and reading/spelling skills. However, after accounting for variations in maternal language, storybook exposure was not a significant predictor of children’s outcomes. In contrast, direct literacy instruction remained a predictor of children’s reading/spelling skills. We argue that the relationship between early informal home literacy activities and children’s language and reading skills is largely accounted for by maternal skills and may reflect genetic influences.     

Development of auditory event-related potentials in young children and relations to word-level reading abilities at age 8 years

A relationship between brain responses at birth and later emerging language and reading skills have been shown, but questions remain whether changes in brain responses after birth continue to predict the mastery of language-related skills such as reading development. To determine whether developmental changes in the brain-based perceptual skills are systematically related to differences in word-level reading proficiency at age 8 years, brain event-related potentials (ERPs) to speech and nonspeech stimuli were recorded annually at the ages of 1 through 8 years in a sample of 109 typically developing children. Two measures of word-level reading (one that requires decoding of real words and one of pseudowords) were administered at age 8 years. Growth curve analysis, using the hierarchical linear models, related reading performance (average versus low) to the longitudinal maturation in the ERP waveform peak and latencies. Maturational changes (e.g., slope, acceleration, and cubic growth) in N1 amplitude from ages 1 to 4 were related to proficiency in decoding pseudoword stimuli only, with children who were less proficient in decoding pseudowords evidencing more steeply negative declines in amplitude with age, particularly at the frontal and parietal recording sites in response to both speech and nonspeech stimuli. In contrast, proficiency in decoding real words was related to developmental changes in N2 amplitudes from ages 4 to 8 only at the parietal recording site, and only in response to nonspeech stimuli. The early development of biologically based differences in the perception and processing of auditory information contributes to later group differences in reading proficiencies at school age.     

Socioeconomic status,parent report of children’s early language skills,and late literacy skills: a long term follow-up study among Chinese children

Previous research on the longitudinal prediction of literacy development has focused mainly on the relationship between early cognitive/language skills and late literacy skills. The present study aimed to test the reliability of a number of measures reported by parents as compared to measuring cognitive and language skills in predicting subsequent reading achievement. Two hundred sixty-two Chinese children were administered four cognitive and language skills over three years at the preliterate stage. Additional information on children’s family socioeconomic status (SES), children’s early language skills, familial reading performance and habits, and familial handedness based on the observations of parents was collected. Performance on these variables in relation to subsequent literacy skills at 11 years of age was examined. SES and children’s early language skills significantly predicted subsequent literacy skills. Even with a number of cognitive and language skills statistically controlled, parental reports of children’s early language skills still contributed to reading comprehension. Poor readers defined at 11 years of age had lagged behind in early language skills, as well as family reading performance and habits, as compared to typically developing readers. These findings suggest that SES and parental estimates of children’s early language skills are useful for predicting children’s subsequent reading achievement.     

Parental contribution to child’s early language and interest in books

The relationships between parents’ age, education, literacy activities and shared reading with the child and children’s language skills and early interest in books were examined in a longitudinal study of 108 children. Parents reported on their children’s lexical and grammatical development by using the MacArthur Communicative Development Inventories (the CDIs) at the ages of 14 and 24 months. The Bayley Scales of Infant Development were administered to the children in a laboratory setting at 24 months. Information on parental background variables was obtained through a questionnaire before the children’s birth. Book reading habits were inquired when the children were 2 years of age. Mothers’ education, literacy activities and shared reading with the child were shown to be more strongly associated with the 2-year-olds’ lexical and grammatical skills than were those of father. A corresponding association to parental background variables emerged regardless of whether parental report data or scores on the structured test were employed as the child language measure. Shared reading with the father was found to be linked to children’s early interest in books. The children who exhibited greater interest in books were likely to be read to by mothers and fathers more frequently than other children. These children also had larger vocabularies than did children with low interest in books. The role of endogenous and exogenous variables in explaining children’s language skills and early book reading interest are discussed.     

Does Teaching Young Children with Disabilities to Read Facilitate their Language Development? A Critical Review of Current Theory and Empirical Evidence

Instruction in reading has been an important component of many early intervention programs for children with disabilities over the past two decades. Justification for the inclusion of reading, prior to the age when it is traditionally taught to children with normal development, has included the importance of reading as a life skill and the value of teaching reading in a systematic, individualised program with the reduced risk of failure. It has also been argued that the teaching of reading, at a time when oral language skills are emerging, will enhance the development of speech and language skills. This proposition is an interesting one in view of the belief, commonly held by educators, that reading needs to be established on a firm language base and that good language skills will enhance the acquisition of reading skills. This paper explores the theoretical and empirical support for the teaching of reading as a supportive language development program for young children with disabilities.     

Young children teach themselves to read and write

Too often young children are hurried into formal academic tasks before they are ready. This push for abstract reading and writing skills in early childhood settings can actually inhibit young children's language development. However, teachers who allow children to naturally acquire reading and writing provide a print-rich environment that encourages experimentation with language.     

A Developmental Neuropsychological Perspective for Reading and Writing Acquisition

The principle of developmental dissociations is illustrated as a technique for studying functional brain organization in developing children with and without frank brain damage. Specific developmental dissociations described include disparities between (a) the cognitive and motor systems; (b) declarative and procedural knowledge; (c) fine motor, orthographic, oral language, reading, and writing function; (d) corresponding orthographic-phonological code connections; and (e) lexical analysis and lexical selection in reading. The educational implications of these dissociations are discussed. First, the developmental dissociations observed between the cognitive and motor systems and between declarative and procedural knowledge in motorically impaired individuals suggest that sensorimotor experience may not be a prerequisite for all intellectual development, as Piaget claimed, and that an abnormal sensorimotor period may impair the acquisition of procedural knowledge relatively more than the acquisition of declarative knowledge. Second, the dissociations observed among fine motor, orthographic, oral language, reading, and writing function support a model of noncontingent, normal variation or developmental independence in acquiring neurodevelopmental skills and academic skills, which fall along a continuum in a range typically found in normally developing readers and writers and which vary considerably within and across individuals in their relative level of development. Third, the dissociations between corresponding orthographic-phonological codes can contribute to problems in acquiring word recognition skills. Finally, the dissociation between lexical analysis and lexical selection accounts for children who can extract meaning from silent reading of text but whose oral reading is dysfluent. We argue, in keeping with the spirit of the Piagetian tradition, that developmental dissociations offer a technique for dissecting the components of biofunctional brain systems and thus for studying the constructive processes of the learner whose nervous system continually interacts with the environment.     

Relations between early reading and writing skills among Spanish-speaking language minority children

Although there is a growing body of literature on the development of reading skills of Spanish-speaking language minority children, little research has focused on the development of writing skills in this population. This study evaluated whether children’s Spanish early reading skills (i.e., print knowledge, phonological awareness, oral language) were related to their Spanish and English early writing skills using a sample of 554 children whose home language was Spanish. Multivariate regression analyses with simultaneous outcomes (Spanish and English invented spelling skills) were conducted to evaluate whether children’s early reading and writing skills were related across languages. Results indicated that children’s print knowledge and phonological awareness skills, but not oral language skills, were significantly related to their Spanish and English invented spelling skills. Spanish early literacy skills were not differentially related to Spanish and English reading and writing skills. The magnitude of the relations between print knowledge and oral language skills and children’s invented spelling skills varied as a function of child age; however, the magnitude of the relation between phonological awareness and invented spelling skills did not differ as a function of child age. Furthermore, results suggested that language minority children’s early reading and writing skills are related but distinct constructs and that children may be able to apply information gained from learning to read and write in their first language when learning to write in their second language.     

Literacy skills in children and adolescents with Down syndrome

Research has found that many children andadolescents with Down syndrome acquire somelevel of reading ability. Studies to date havedocumented that cognition, language, andphonological awareness contribute tovariability observed in performance onconventional literacy measures for thispopulation, although the extent of relativecontributions varies among studies. Less isknown about the relationship of early literacyskills to conventional reading, or howrelationships among variables that supportliteracy acquisition are similar or differentfrom those observed in typically developingchildren. In this project, cognition,language, early literacy, phonologicalawareness and reading skills were examined in agroup of children and adolescents with Downsyndrome (aged 5;06 to 17;03) and a group oftypically developing children (aged 3;06 to5;03) matched for nonverbal cognition. Resultsrevealed broad variability in performance onearly literacy and reading measures in personswith Down syndrome. Comparisons with mental age-matchedchildren indicated differences in the relativecontribution of language and cognition toreading ability, with language being a strongerpredictor in the group with Down syndrome.     

Reading and spelling among nonvocal children with cerebral palsy: Influence of home and school literacy environment

In literacy research, home literacy experiences and exposure to print have been ascribed a contributing role in later reading development along with metalinguistic and other cognitive skills. In a study on reading and spelling skills in nonvocal children the home and school literacy experiences of 35 children with cerebral palsy were studied by means of questionnaires. The questionnaires were completed by the parents and teachers. The answers from the disability group were compared with the answers from two comparison groups, one matched for mental age and sex and the other for sex and IQ. The results revealed few differences in the home literacy experiences of the three groups. The children of all three groups had access to a variety of printed materials, and there were no differences in the parents' reading habits or in their values and high priority given to literacy. The disabled children took a passive role in story reading with little linguistic interaction, and the parents took the active part. The results indicated that home literacy experiences in the groups studied at best had a marginal influence on reading development. Individual differences in speech and language abilities were proposed to have higher explanatory value of the low literacy skills found among nonvocal children.     

A Family Strengths Approach to Early Language and Literacy Development

Language and literacy skills are an essential element of young children’s development and allow them to interact meaningfully with other people and to develop knowledge in all subject areas. Despite the importance of language and literacy development, however, more than one-third of children in the United States enter school with significant differences in language, early literacy skills, and motivation to learn that place them at considerable risk for developing long-term reading difficulties. The quantity and quality of language interactions children have with their parents and exposure to print in their home environment prior to entering school have an important impact on these individual differences. This paper provides teachers with guidelines and tools for helping families identify and create language and literacy opportunities in their home environment that reflect their unique strengths and routines.     

The Role of Gender and Reading Competence in the Development of Motivational Orientations from Kindergarten to Grade 1

This longitudinal study examined gender differences in motivation and the role of reading prerequisites, that is phonemic and comprehension skills, in the formation of motivational tendencies from kindergarten up to grade 1. The longitudinal sample consisted of 157 Finnish-speaking children. Teachers rated children's adaptive goals, (i.e. task orientation and social dependence orientation) at four points of time, kindergarten-spring, preschool-fall, preschool-spring and in the fall of grade 1. Children's phonemic awareness and language comprehension skills were assessed in kindergarten at the initiation of the study (i.e. initial phoneme identification, rhyming, writing of the alphabet, listening and instruction comprehension). Word reading and reading comprehension skills were assessed at the end of grade 1 in the three groups of children at risk for reading failure and in children with high reading prerequisites. The results showed that gender and early phonemic and language comprehension differences were associated with divergent motivational-developmental trajectories. Children with low phonemic or low language comprehension skill showed higher social dependence and lower task orientation over time than children with high initial reading prerequisites. In particular, boys with low reading prerequisites underwent a negative motivational change. The group of children who had poor phonemic and poor language comprehension skills showed most unfavorable development of motivation and reading. Findings concerning motivational trajectories are discussed with regard to the lack of fit between child's competence and curriculum demands.     

The Language Proficiency Profile-2: Assessment of the Global Communication Skills of Deaf Children Across Languages and Modalities of Expression

Data are presented from two studies that investigate the developmental trends and concurrent validity of a measure of language and communication skills for deaf children, the Language Proficiency Profile-2 (LPP-2), developed by Bebko and McKinnon (1993). The LPP-2 was designed to evaluate the overall linguistic/communicative skills of deaf children, independent of any specific language or modality of expression. It focuses on the totality of the children's communication skills. Experiment 1 investigated developmental trends of the LPP-2 for both deaf and hearing children, studying a combined sample of deaf and hearing children from the United States and Canada. Experiment 2 investigated the relationship between the LPP-2 and two commonly used measures to assess deaf children on language development (Preschool Language Scale-3) and early reading skills (Test of Early Reading Ability-Deaf/Hard-of-Hearing). Results from the two studies indicate that the LPP-2 has good utility not only as a measure of overall language development but also as a predictor of achievement for English language and early reading skills.     

A classroom-based model of language intervention for preschool language-impaired children: Principles and procedures

It is now generally recognized that a language impairment in preschool children may be predictive of later linguistic, reading, and academic difficulties. Language intervention procedures, derived from theoretically-based principles of language development and implemented in a child’s regular classroom environment, may benefit children at risk for persistent language and learning problems. This paper describes the development and application of individualized intervention procedures in a classroom for preschool language-impaired children. The discussion focuses on selected language development principles which helped determine the setting, timing, interactive participants, purpose, and content of the language intervention program. Resulting changes in language comprehension and production are reported based on individual classroom performance as well as a comparison of pre-and posttest scores for a range of comprehension skills. A version of this paper was presented at the Annual Conference of the Orton Dyslexia Society, November 5, 1987, San Francisco.     

The Relation Between Morphological Awareness and Reading Comprehension: Evidence From Mediation and Longitudinal Models

We examined the role of a hypothesized factor in reading comprehension: morphological awareness, or the awareness of and ability to manipulate the smallest meaningful units or morphemes. In this longitudinal study, we measured English-speaking children’s morphological awareness, word reading skills, and reading comprehension at Grades 3 and 4, in addition to their phonological awareness, vocabulary, and nonverbal ability as control measures. Path analyses revealed that word reading skills partially mediated the relationship between morphological awareness and reading comprehension at each grade. Further, children’s early morphological awareness partially explained children’s gains in reading comprehension, and their early reading comprehension partially explained their gains in morphological awareness. These findings support the predictions of recent models of reading comprehension: that morphological awareness impacts reading comprehension both indirectly through word reading skills and directly through the language system and that morphological awareness underpins the development of reading comprehension (e.g., Perfetti, Landi, & Oakhill, 2005).     

Reading achievement in relation to phonological coding and awareness in deaf readers: a meta-analysis

The relation between reading ability and phonological coding and awareness (PCA) skills in individuals who are severely and profoundly deaf was investigated with a meta-analysis. From an initial set of 230 relevant publications, 57 studies were analyzed that experimentally tested PCA skills in 2,078 deaf participants. Half of the studies found statistically significant evidence for PCA skills and half did not. A subset of 25 studies also tested reading proficiency and showed a wide range of effect sizes. Overall PCA skills predicted 11% of the variance in reading proficiency in the deaf participants. Other possible modulating factors, such as task type and reading grade level, did not explain the remaining variance. In 7 studies where it was measured, language ability predicted 35% of the variance in reading proficiency. These meta-analytic results indicate that PCA skills are a low to moderate predictor of reading achievement in deaf individuals and that other factors, most notably language ability, have a greater influence on reading development, as has been found to be the case in the hearing population.