Development of decoding,reading comprehension,vocabulary and spelling during the elementary school years

The goal of this study was (1) to investigate the development of decoding(efficiency), reading comprehension, vocabulary and spelling during theelementary school years and (2) to determine the differences between poor,average and good performers with regard to the development of theseskills. Twice each year two standardized tests for each skill wereadministered. For two successive periods, one of the tests for each skill wasthe same. To describe the development in terms of a latent variable evolvingacross grades, the structured-means version of the structural equationmodel was used. The growth was expressed in terms of effect size. Withrespect to the first question, clear seasonal effects were found for readingcomprehension, vocabulary and spelling, while the seasonal effect fordecoding efficiency was restricted to the early grades. Progress tended tobe greater from fall to spring than from spring to fall. For decodingefficiency, and to a lesser degree for vocabulary and spelling, growthshowed a declining trend across grades. For reading comprehension, theprogress in grade 2 was lower than the progress in grade 3, but progresswas declining across higher grades. With respect to the second question,it appeared that initially low performers on reading comprehension,vocabulary and spelling tended to show a greater progress, especially inperiods where the largest amount of instruction was given. Although it wasfound that the low, medium and high ability groups remain in the sameorder, as far as their means are concerned, these findings do not confirmthe existence of a Matthew effect for reading comprehension, vocabularyand spelling. For decoding efficiency no clear differential effect could befound: the gap between the poor and good performers did not widen overtime for this skill.     

Phonology constrains the internal orthographic representation

Four experiments explored the composition and stability of internalorthographic representations of printed words. In three experiments,subjects were presented on successive occasions with words that wereconsistently spelled correctly or were consistently misspelled. On thesecond presentation, subjects were more likely to judge both kinds ofwords as correctly spelled than on the first presentation, suggesting thattheir preexperimental orthographic representations had been altered tomatch what they had seen on the first presentation. However, onlymisspellings that were consistent with the correct phonology wereaccepted; spellings that altered the phonology were rarely accepted,suggesting that some parts of the orthographic representation are lessstable than others. Also, subjects' reliance on orthographic vs.phonological memory when judging a word's spelling was affected by thekinds of other misspellings in the list. Lists that contained somephonologically implausible spellings for real words (e.g., *assostance)induced subjects to rely more on phonological plausibility when judgingthe correctness of other words in the list and less on orthographic memory.An individual grapheme in an internal orthographic representation wasunstable when there were many phonologically acceptable alternatives forit. The results are contrary to the view that the strength of an internalrepresentation is uniform across all its graphemes and is a function only ofvisual experience with the printed form. Results were interpreted in thecontext of a theory that considers spelling knowledge to be a by-productof the reading process, a process that involves phonological analysis.     

Morphological awareness and early and advanced word recognition and spelling in Dutch

This study investigated the relations of three aspects of morphological awareness to word recognition and spelling skills of Dutch speaking children. Tasks of inflectional and derivational morphology and lexical compounding, as well as measures of phonological awareness, vocabulary and mathematics were administered to 104 first graders (mean age 6 years, 11 months) and 112 sixth graders (mean age 12 years, 1 month). For the first grade children, awareness of noun morphology uniquely contributed to word reading, and none of the morphological tasks were uniquely associated with spelling. In grade 6, derivational morphology contributed both to reading and spelling achievement, whereas awareness of verb inflection uniquely explained spelling only. Lexical compounding did not uniquely contribute to literacy skills in either grade. These findings suggest that awareness of both inflectional and derivational morphology may be independently useful for learning to read and spell Dutch.     

The role of phonological memory,word recognition,and comprehension skills in reading development: from preschool to grade 2

We examined the relationships among phonologicalawareness, phonological memory, and development ofreading skills in a longitudinal study, by following222 Finnish preschoolers through the grade 2.The main focus was on the role of phonological memoryin word recognition and comprehension. The skillsassessed were verbal abilities, phonological memory,phonological awareness, word recognition, listeningand reading comprehension, altogether comprising themost extensive set of variables so far used in thestudy of phonological memory and reading. We proposeda structural equation model for the developmentalrelationships among the variables. This model waslargely confirmed by the data. The most significantpredictor of word recognition was phonologicalawareness. Phonological memory had only a weak effecton phonological awareness at preschool age, andvia this connection, a weak indirect effect on grade 1 word recognition. Contrary toexpectations, phonological memory also had asignificant, albeit weak effect on grade 2word recognition. Phonological memory did notdirectly affect reading comprehension. However,it was strongly related to listeningcomprehension at preschool, and via the strongeffects of both listening comprehension and wordrecognition on reading comprehension, there weresignificant indirect effects of phonological memory onreading comprehension. The results also underline thestability of development of phonological memory, wordrecognition, and comprehension from preschool to theend of grade 2.     

The influence of reading unit size on the development of Stroop interference in early word decoding

The purpose of the experiments was to determine the automatic use of large or small word reading units in young readers in the absence of word decoding strategies. Picture-word Stroop interference was examined from four types of conflicting labels: (a) words containing both highly predictable grapheme–phoneme correspondence (GPC) units and highly consistent rime units (henceforth, Hi-GPC + Hi-Rime); (b) words with highly predictable GPC units and less consistent rime units (Hi-GPC + Lo-Rime); (c) words with low predictability GPC units and highly consistent rime units (Low GPC + High Rime); (d) nonwords that contained both highly predictable GPC and highly consistent rime units. Naming time for pictures containing these labels was compared against that for pictures with random letter strings or no labels. In Experiment 1, Stroop interference was examined in first, second, and third grade children to determine whether there was developmental change in the presence of rime or GPC interference. In Experiment 2, Stroop interference was examined as a function of relative reading skill in first grade children. In Experiment 3, Stroop interference in adults was compared to the use of rime or GPC pronunciation strategies for nonword reading. In all experiments, Stroop interference in picture naming was longer for pictures with highly predictable GPC unit labels than less predictable GPC unit labels. However, in Experiment 3, even though adults showed interference from predictable GPC units in the Stroop task, they always preferred rime pronunciation for ambiguous nonwords in the nonword reading task. It is argued that the current experiments provide evidence for a flexible units model. The results of this study were presented at the Cognitive Development Society meeting, November 2001, Virginia Beach, VA, and the American Educational Research Association meeting, April 2004, San Diego, California.     

The spelling performance of ESL and native speakers of English as a function of reading skill

Seventy-nine children in grade two spelled pseudowords and real words differing in vowel quality and the presence or absence of consonant clusters, and their accuracy was examined as a function of native language and reading ability. Because of the heavy reliance on phonological processing in spelling, we hypothesized that poor readers, who typically exhibit impaired ability to sequence, segment and transform phonemes into graphemes, would spell more poorly than average readers. This hypothesis was substantiated. Second language speakers also displayed phonological deficits relative to native speakers, and we hypothesized that this deficit would also be obvious in spelling accuracy. However, second language speakers performed in a manner similar to native speakers. Supporting this are findings from multiple regressions showing that the processing profiles of second language speakers and native speakers are strikingly similar, and that only poor readers of both language backgrounds diverge from the common patterns and display pervasive phonological deficits.     

The Relationship of Spelling Recognition, RAN, and Phonological Awareness to Reading Skills in Older Poor Readers and Younger Reading-Matched Controls

The role of spelling recognition was examined in word reading skills and reading comprehension for dyslexic and nondyslexic children. Dyslexic and nondyslexic children were matched on their raw word reading proficiency. Relationships between spelling recognition and the following were examined for both groups of children: verbal ability, working memory, phonological measures, rapid naming, word reading, and reading comprehension. Children’s performance in spelling recognition was significantly associated with their skills in word reading and reading comprehension regardless of their reading disability status. Furthermore, spelling recognition contributed significant variance to reading comprehension for both dyslexic and nondyslexic children after the effects of phonological awareness, rapid naming, and word reading proficiency had been accounted for. The results support the role of spelling recognition in reading development for both groups of children and they are discussed using a componential reading fluency framework.     

The relationship between linguistic characteristics and reading/writing performances of Norwegian children

The relations between different word categories and children's reading and writing performances were examined in twenty 9-year-old children. Results indicated for Norwegian, which is more regular than English but less regular than Finnish, that the length and the frequency of words and their interactions are factors substantially related both to children's reading, writing time (writing velocity), and spelling performances, whereas the regularity factor affected children's spelling only. Significant intercorrelations among reading and writing (accuracy and spelling) measures were found.     

Predicting reading level in grades 1 to 6 from listening level and decoding level: Testing theory relevant to the simple view of reading

The relationships among pronunciation level (decoding), verbal level (listening), and accuracy level (reading) were investigated in grades 1 to 6, and for students who are in the advanced phase of decoding. The data collected were used to investigate the validity of the simple view of reading and the causal model of reading achievement which holds that pronunciation level (P_L) and verbal level (V_L) are the proximal causes of accuracy level (A_L). A total of 135 students in grades 1-6 were given measures of nonword decoding, real word decoding, listening, and reading. All of the reliable variation in an indicant of the level of reading ability, A_L, could be predicted from an indicant of the level of ability to decode real words, P_L, and an indicant of listening level, V_L. Furthermore, the strong relationship between pronunciation level, P_L, and accuracy level, A_L, did not evaporate for the students who had mastered basic decoding skills, as measured by nonword decoding tests. The correlations between pronunciation level, P_L, and accuracy level, A_L, were high even for students in grades 5 and 6, most of whom probably had progressed beyond the alphabetic phase (phonological recoding). Correlational support was found for the simple view of reading and the causal model which holds that A_L is equal to the square root of the product of V_L and P_L. The above theory and supporting data were interpreted as suggesting that the level of reading accuracy, A_L, of students can be improved the most throughout grades 1 to 6 by emphasizing instruction that will improve pronunciation level, or decoding, even for children who have progressed beyond the beginning to read phase which involves learning the alphabetic principal, or phonological recoding.     

Implementation and effects of explicit reading comprehension instruction in fifth-grade classrooms

In this intervention study, teachers tried to implement four instructional principles derived from the literature on research-based, explicit reading comprehension instruction in their fifth-grade classrooms. The principles focused on relevant background knowledge, reading comprehension strategies, reading-group organization, and reading motivation. Results indicated that during a five-month intervention period, students in the intervention group increased their strategic competence and comprehension performance relative to controls. However, no effect was found on reading motivation. The overall pattern of results is explained in relation to the implementation quality of the four instructional principles, with implementation data indicating that the principles of reading-group organization and reading motivation were particularly difficult for the teachers to translate into classroom practice.     

A developmental investigation of word length effects in reading using a new on-line word identification paradigm

Third and fifth grade children (average age 8.6and 10.6 years) and adult participants weretested with printed words of varying length ina new on-line identification task (theluminance increment paradigm, LIP) and aspeeded naming task. Effects of general length(length in letters, phonemes and syllables)were shown to decrease systematically with agein both tasks. Third grade children showedsubstantial effects of word length while theeffect practically disappeared in adults. Ingeneral, this developmental pattern was alsofound when separately examining effects ofphonological length (with length in lettersheld constant) and small unit length (withnumber of syllables held constant), althoughsome differences were observed in performancein the identification and the naming task. Thetwo tasks also showed different developmentalpatterns, with the greatest gain in performancearising between 3rd and 5th grade inthe naming task, and the largest improvementoccurring between 5th grade and adults inthe identification task. The results suggestthat the new luminance increment paradigm canbe usefully applied as an on-line measure ofprinted word perception in beginning readers.     

Explaining social class differences in growth of reading skills from beginning kindergarten through fourth-grade: The role of phonological awareness,rate of access,and print knowledge

The aim of this longitudinal study was to further ourunderstanding of the reasons for social classdifferences in growth of decoding and readingcomprehension skills from beginning kindergarten throughchildren's fourth grade year. Participants wereenrolled in five public schools in a moderately sizedsouthern American city (n = 197). We examined ifbeginning kindergarten levels of three kinds ofreading related abilities explained social classdifferences in growth of reading skills during thetime periods of beginning kindergarten to children'sfirst-, second-, third-, and fourth-grade years. Thereading related abilities were phonological awareness,rate of access to phonological information inlong-term memory, and print knowledge. We found thatthe reasons for social class differences in growth ofreading skills depended on the time interval that wasconsidered. During the earliest time interval, socialclass differences in growth of decoding skills werecompletely accounted for by performance on the controlmeasures of general verbal intelligence and prior wordreading skills. During the remaining time periods,social class differences in growth of decoding andreading comprehension skills persisted whenperformance on the three kinds of reading relatedabilities and the control measures were accounted for. The greatest attenuation of SES differences in growthof reading skills occurred when beginning kindergartenlevels of print knowledge were taken into account.     

Phonological skills and reading comprehension

In the present study the mainfocus is on the impact of phonologicalawareness on reading comprehension. The studyinvolved 1300 children in Grade 1. Syllableawareness, phoneme awareness, word decodingand reading comprehension were each assessedwith two or three subtests. The results wereanalyzed by structural modeling. Due to themarked skewness observed for some of themanifest variables, separate analyses wereperformed for students with average worddecoding performance and for students with poorword decoding. Both among average and poordecoders, phonological awareness had a directimpact on reading comprehension, indicatingthat phonological factors play an independentrole in the processing of text. One possibleway to explain this observation is that atleast two critical factors in comprehension,vocabulary and short-term memory, are bothdetermined in part by phonological ability. Itmight also be the case that phonologicalawareness partly reflects metacognitiveprocesses assumed to be involved in readingcomprehension.     

The role of reading self-concept and home literacy practices in fourth grade reading comprehension

This study examined the relationships among reading comprehension, reading self-concept, and home literacy environment (HLE) in a sample (n = 67) of fourth grade children enrolled in an urban school district. Children’s reading comprehension, word reading, and verbal ability were assessed using standardized measures. Reading self-concept was assessed with a child-administered survey that is comprised of three subscales (i.e., competence in reading, perception of ease with reading, attitude towards reading). Information on child and family literacy practices was collected via a questionnaire administered to parents of participating children. Bivariate correlations and multiple regression analyses demonstrated that all three reading self-concept subscales were positively related to reading comprehension after controlling for verbal ability and word reading skills, and aspects of HLE were positively related to aspects of reading self-concept. The findings support the inclusion of psychosocial and family literacy measures in future studies designed to investigate the process of reading comprehension for children beyond the primary grades.

Genetic and environmental bases of reading and spelling: A unified genetic dual route model

We develop and test a dual-route model of genetic effects on reading aloud and spelling, based on irregular and non-word reading and spelling performance assessed in 1382 monozygotic and dizygotic twins. As in earlier research, most of the variance in reading was due to genetic effects. However, there were three more specific conclusions: the first was that most of the genetic effect is common to both regular and irregular reading. In addition to this common variance evidence was found for distinct genes influencing the acquisition of a lexicon of stored words, and additional genetic effects influencing the acquisition of grapheme–phoneme correspondence rules. The third conclusion, from a combined model of reading and spelling, is that reading and spelling have a common genetic basis. Models that did not distinguish lexical and non-lexical performance fit significantly worse than dual route genetic models. An implication of the research is that models of reading, whether connectionist or dual-route, must allow for the genetic independence of neurological processes underlying the decoding of non-words and irregular words.     

Early prediction of individual growth in reading

Seventy four boys with reading disabilities and amatched control group of normal readers were followedduring their compulsory schooling (to grade 9). Worddecoding performance was assessed with the Wordchainstest on three occasions. For each student a lineargrowth function was estimated. The slope parameter wasused as the dependent variable in a multipleregression analysis with a large number of explanatoryfactors from grades 2 and 3 including phonologicalskills, reading and spelling, non-verbal intelligence,motor skills, eye movements, teacher ratings of schoolbehaviour and parents' education. The proportion ofvariance in growth explained for the reading disabledboys amounted to 25%, the most powerful predictorsbeing early reading performance and non-verbalintelligence. More surprisingly, neither teacherratings nor family background gave useful predictiveinformation. For the control group none of theindependent variables explained the variance of growthin reading.     

Blending versus whole word approaches in first grade remedial reading: Short-term and delayed effects on reading and spelling words

Twelve very poor readers in May of first grade, including four withdisabilities, were randomly assigned to one of two daily tutoring conditions designed to teach children to read regularly spelled short words by one of two methods: blending sounds to form words, or cumulative introduction of whole words. Both treatments included letter/sound correspondences and spelling words in the reading set. At the end of ten sessions, no differences were found between the treatment outcomes; however, delayed posttests one week later found differences favoring the blending treatment on reading and spelling instructional words, and on transfer to words composed of known letter sounds.     

Clinical appraisal of spelling ability and its relationship to phonemic awareness (blending,segmenting, elision,and reversal), phonological memory,and reading in reading disabled,ADHD, and normal children

Seventy-eight 8-to-12-year-old children (34 ReadingDisabled; 31 Attention-Deficit-Hyperactivity-Disordered; and 13diagnosed normal controls) were given a battery oftests including cognitive, linguistic, academic,phonemic awareness, and memory tests. As part of theacademic battery an 8-point spelling rating scale wasdeveloped (Rating Scale) that resulted in threedifferent scores which reliably discriminated amongthe three groups. Relationships between phonemicawareness, phonological memory, reading and spellingwere explored. Zero-order and second-ordercorrelations were completed with indications thatphonemic awareness tasks (elision, blending, reversal,and segmenting) and phonological memory (WISC-IIIDigit Span) are significantly correlated with readingdecoding and spelling measures with slightly highercorrelations with the Rating Scale. Regressionanalyses resulted in a large proportion of thevariance on reading and spelling tasks accounted forby phonemic awareness (particularly elision andreversal) and phonological memory. The ReadingDisabled group was found to produce more errors thatwere phonetically inaccurate than the other twogroups. The demand of spelling ten ``error' wordsbeyond the RD students' achievement level appeared toelicit greater weaknesses in their phonologicalrecoding abilities than in those of the ADHD ornormally achieving students.