The present study examined whether syntactic comprehension constitutes a source of individual differences separate from vocabulary and of relevance to reading comprehension. One hundred and sixty-one Danish Grade 6 students completed multiple tests of syntactic comprehension, vocabulary, decoding, and reading comprehension. Syntax measures were…

The fundamental significance of literacy achievement cannot be overstated. However, the 2022 National Assessment for Educational Progress (NAEP) divulges alarming findings, with a mere 33 percent of the nation's fourth graders performing at or above proficiency in reading (NAEP, 2022). Exploring the nexus of research-informed pedagogy and practice…

It is well established that children's reading comprehension is driven, at least in part, by their awareness of morphemes, or the smallest units of meaning in language. The question of how it does so is largely open; this mechanistic knowledge would specify theories of reading comprehension and guide effective classroom instruction. We report here…

This study examined the heterogeneity of early literacy profiles of English learners and non-English learners. Utilizing a latent profile analysis, the degree to which distinct learner profiles emerged was examined using code-based and language-based measures administered in the beginning of first grade. Participants included 11,803 English…

Purpose: Although the knowledge of decoding acquisition has expanded in the past years, theoretical information is still needed to guide practices concerning decoding skills in clinical and educational scenarios in languages other than English. Thus, we aimed to investigate the word-length effects on decoding acquisition regarding the time spent…

Reading acquisition in Arabic presents unique challenges, notably due to its complex morphological structure and the diglossic nature of the language. The discrepancy between written (Modern Standard) and spoken Arabic poses significant barriers for learners, particularly in decoding morphologically complex words. This study explored the role of…

High-quality decodable books enhance literacy by providing children with focused practice opportunities to break down sounds they have learned and apply their decoding skills. Just Right Reader (JRR) hired LXD Research to measure its impact during a pilot study in the Spring of 2024 to determine the effect of their decodable books on literacy…

Two recent computational models of reading development propose that irregular words are read using a combination of decoding and lexical knowledge but differ in assumptions about how these sources of information interact and about the relative importance of different aspects of lexical knowledge. We report developmental data that help to…

Background: South Africa's PIRLS 2021 outcomes revealed that learners struggle with comprehension. The reasons for poor reading need to be identified and addressed to stem this challenge. Aim: This study assessed Sesotho Grade 4 learners' knowledge of simple and complex letter sounds, their oral reading fluency and the relationship to their oral…

Proficient reading requires the ability to analyze words for various properties, including pronunciation, meaning, and syntactical function. However, most instruction in word analysis is limited to phonics instruction provided in the early elementary grades. For older students, whose words largely center units of meaning, or morphemes, early…

Many second language (L2) students in Sweden struggle with reading in Swedish. There needs to be more research on how L2 students with weak word decoding skills in Swedish could be individually supported. Therefore, the current study examined the impact of a systematic and intensive word decoding intervention in Swedish among individual L2…

Previous studies uncover that vocabulary knowledge may be related to compound structure awareness (the awareness of relational structure embedded in compound words), and they both contribute to reading comprehension. Yet, limited studies have examined the dynamic relationship between vocabulary knowledge and compound structure awareness, or their…

This study investigates the role of diglossic and orthographic features in reading comprehension in Arabic. Specifically, it probes the independent contribution of language, metalinguistic, and decoding skills in the spoken language and in Standard Arabic to reading comprehension in the "abjad" writing system of Arabic. A sample of 112…

The purpose of this longitudinal study is to investigate the association between poor language skills in toddlers and later reading skills. In contrast to earlier research, the present study used an authentic assessment of language skills conducted by staff in early childhood education and care as a tool for early identification. The participants…

We report on a school-based randomized control trial study comparing two morphological interventions with untaught controls: one focusing on direct instruction targeting print morphological decoding (direct decoding condition) and the other on inquiry-focused pedagogy using oral morphological analysis (inquiry-analysis condition). We identified 63…