We report a study of incremental learning of new word meanings over multiple episodes. A new method called MESA (Markov Estimation of Semantic Association) tracked this learning through the automated assessment of learner-generated definitions. The multiple word learning episodes varied in the strength of contextual constraint provided by…

Understanding how the etiology of print awareness and phonological awareness are related to the etiology of decoding can provide insights into the development of word reading. To address this issue, we examined the degree of overlap among etiological influences of prereading skills in 1,252 twin pairs in kindergarten. Genetic, shared…

Although it is well recognized that reading skills vary in people with autism spectrum disorders (ASD), reasons for this variability are not well understood. We used the simple view of reading model to investigate both word decoding and text comprehension processes in two well-established subtypes within the autism spectrum, those with…

In a cross-sectional study, we examined the relationship between the quality of lexical representations and text comprehension skill in German primary school children (Grades 1-4). We measured the efficiency and accuracy of orthographical, phonological, and meaning representations by means of computerized tests. Text comprehension skill was…

Beginning readers' reading latencies increase as words become longer. This length effect is believed to be a marker of a serial reading process. We examined the effects of visual and phonological skills on the length effect. Participants were 184 second-grade children who read 3- to 5-letter words and nonwords. Results indicated that reading…

Effects of syllable structure and of alphabetic reading skills on the development of phoneme awareness were investigated in a longitudinal study. Awareness of phonemes in syllable onsets and codas was examined in first graders speaking Czech (n = 45) and German (n = 33). Czech children showed higher awareness of phonemes in onsets than in codas,…

The present study investigated proximal and distal predictors of reading comprehension by including latent factors such as alphabet knowledge, phonological awareness, semantic knowledge, word reading, oral reading fluency, and reading comprehension. The sample consisted of 79 five-year-old Korean-monolingual children who were assessed at the end…

We report a longitudinal study investigating the predictors of reading comprehension and word reading accuracy between the ages of 7 to 8 (UK Year 3) and 10 to 11 years (Year 6). We found that different skills predicted the development of each. Reading comprehension skill measured in Year 3 was a strong predictor of comprehension in Year 6;…

In the present study, we examined oral and silent reading fluency and their relations with reading comprehension. In a series of structural equation models with latent variables using data from 316 first-grade students, (a) silent and oral reading fluency were found to be related yet distinct forms of reading fluency, (b) silent reading fluency…

We investigate the effects of age-related factors and formal instruction on the development of reading-related skills in children aged 4 and 7 years. Age effects were determined by comparing two groups of children at the onset of formal schooling; one aged 7 (later-schooled) and one aged 4 (earlier-schooled). Schooling effects were measured by…

The contributions of six important reading-related skills (phonological awareness, rapid naming, orthographic skills, morphological awareness, listening comprehension, and syntactic skills) to Chinese word and text reading were examined among 290 Chinese first graders in Hong Kong. Rapid naming, but not phonological awareness, was a significant…

We explore the relationships between basic auditory processing, phonological awareness, vocabulary, and word reading in a sample of 95 children, 55 typically developing children, and 40 children with low IQ. All children received nonspeech auditory processing tasks, phonological processing and literacy measures, and a receptive vocabulary task.…

Does the choice of test for assessing reading comprehension influence the outcome of genetic analyses? A twin design compared two types of reading comprehension tests classified as primarily associated with word decoding (RC-D) or listening comprehension (RC-LC). For both types of tests, the overall genetic influence is high and nearly identical.…

We examined the growth of spelling skills in a large sample of Norwegian children (N = 228) over the first 3 years in school. The roles of phoneme awareness, letter knowledge, rapid automatized naming (RAN), visual-verbal paired-associate learning, and verbal short-term memory as predictors of later spelling skills were examined. Phoneme awareness…

Genetic and environmental relations between vocabulary and reading skills were explored longitudinally from preschool through Grades 2 and 4. At preschool there were strong shared-environment and weak genetic influences on both vocabulary and print knowledge but substantial differences in their source. Separation of etiology for vocabulary and…