Letter visual similarity of Japanese hiragana and katakana based on reaction times

AbstractLetter similarity (i.e., perceptual distance) is a critical measure to better understand letter perception and literacy development. Despite its importance, however, measurements of letter similarity for non-alphabetic scripts are limited, and the shortage of letter similarity for non-alphabetic script interferes with the identification of the universality and the uniqueness of letter perception systems across different scripts. In the present study, we provide a comprehensive matrix of letter similarity for Japanese kana letters (hiragana and katakana). We obtained the discrimination reaction times for simultaneously presented letter pairs and calculated the perceptual distance of 4,278 letter pairs by inversing the time. The matrix showed significant correlations with previously obtained letter similarity for hiragana and katakana. An additional experiment showed that letter pairs for the same sounds (え–エ) produced significantly slower responses compared with those for different sounds (え–コ). However, the differences in reaction times between the same and different sound conditions were smaller than the sequentially presented conditions, suggesting that the matrix was partially attributable to knowledge-based factors (e.g., letter-sound knowledge). This first comprehensive matrix of letter similarity (i.e., perceptual distance) for Japanese kana letters (hiragana and katakana) will be useful for researchers interested in letter perception and literacy development.

Preschool predictors of learning to read and spell in an additional language: a two-wave longitudinal study in a multilingual context

The study explores whether foundational skills of reading and spelling in preschool (age 5–6) predict literacy skills cross-linguistically in an additional language in Grade 1 (age 6–7). A sample of linguistically diverse preschool children completed tasks of phonological awareness, letter-sound knowledge, verbal-short term memory, rapid automatized naming, and lexical knowledge in the language of preschool instruction Luxembourgish. The children were followed-up in Grade 1 where literacy skills were assessed in the language of schooling, i.e., German, after five months of literacy instruction. German was a non-native language for all children. Longitudinal correlations confirm that individual differences in single word/pseudoword reading and spelling in German in Grade 1 can be predicted by all the foundational literacy skills that were assessed in Luxembourgish. Path analyses showed that phonological awareness in Luxembourgish emerged as the strongest unique predictor of Grade 1 literacy skills in German. The second unique preschool predictor of Grade 1 literacy skills was letter-sound knowledge. Results are consistent with the view that literacy development in an additional language builds upon similar building blocks as literacy acquisition in a first language, at least for languages that are typologically close. However, current findings suggest that respective contributions between predictors and literacy skills in children learning to read in an additional language may vary from patterns observed in studies with children acquiring literacy in their first language.

Teaching Alphabet Recognition and Letter Sound Correspondence Using a 4 Blocks of Literacy Model for Children with Complex Communication Needs (CCN): Illustrated with a Single Case Study

There are numerous hurdles to literacy acquisition for students with severe and multiple disabilities, such as intellectual disability, complex communication needs including physical disability and autism. However, there is substantial body of research that suggests that these children can gain literacy skills, develop communication and language with effective literacy education, and with the support of assistive and augmentative alternative communication systems. The study describes an ongoing intervention for teaching alphabet recognition and letter-sound correspondence using the 4 blocks of literacy model with a 5.7 year old girl with multiple disabilities who use augmentative alternative communication systems for communication. Emergent literacy instruction for improving alphabet recognition and letter sound correspondence was taught applying the principles of the 4 blocks “Working with words” and “Shared book reading” over a period of eight months. Improvement noticed in alphabet recognition and letter sound correspondence was investigated. Emergent literacy instruction using 4 blocks of literacy model was proved to be an effective method in gaining the alphabet principles and phonics skills. The study provides insights to the rehabilitation professionals and budding therapists on how to implement emergent literacy instructions and strategies to be considered for children with complex communication needs. Key words: Emergent Literacy, Complex Communication Needs, Augmentative Alternative Communication, Multiple Disabilities, 4 Blocks of Literacy Model.

A Computerized Syllable-Based Intervention for French-Speaking Children with Down Syndrome: What Effects on Reading Skills?

The aim of this research was to provide to eight children with Down Syndrome a syllable-processing software program that drew their attention to phonological and orthographic syllables. The children participated in a 10-hour training course (spread over 5 weeks) that used an experimental design with four assessment sessions, the first two of which were used to obtain a baseline in literacy skills. The effect of training was assessed just after training and two months later. A significant effect on decoding was observed at medium term after training. All children progressed in at least one domain, either in phonological skills, in decoding, or in word reading. Four children progressed in decoding and word reading. This study confirms the appropriateness of using phonetic approaches to reading instruction in order to stimulate learning to read in children with Down Syndrome. The syllable-based training facilitates the construction of associations between letters and syllables—the “syllabic bridge”—and could be a faster and easier way to learn letter-sound correspondences in French.

Audiovisual Learning in Dyslexic and Typical Adults: Modulating Influences of Location and Context Consistency

Learning to read involves efficient binding of visual to auditory information. Aberrant cross-modal binding skill has been observed in both children and adults with developmental dyslexia. Here, we examine the contribution of episodic memory to acquisition of novel cross-modal bindings in typical and dyslexic adult readers. Participants gradually learned arbitrary associations between unfamiliar Mandarin Chinese characters and English-like pseudowords over multiple exposures, simulating the early stages of letter-to-letter sound mapping. The novel cross-modal bindings were presented in consistent or varied locations (i.e., screen positions), and within consistent or varied contexts (i.e., co-occurring distractor items). Our goal was to examine the contribution, if any, of these episodic memory cues (i.e., the contextual and spatial properties of the stimuli) to binding acquisition, and investigate the extent to which readers with and without dyslexia would differ in their reliance on episodic memory during the learning process. Participants were tested on their ability to recognize and recall the bindings both during training and then in post-training tasks. We tracked participants’ eye movements remotely with their personal webcams to assess whether they would re-fixate relevant empty screen locations upon hearing an auditory cue—indicative of episodic memory retrieval—and the extent to which the so-called “looking-at-nothing behavior” would modulate recognition of the novel bindings. Readers with dyslexia both recognized and recalled significantly fewer bindings than typical readers, providing further evidence of their persistent difficulties with cross-modal binding. Looking-at-nothing behavior was generally associated with higher recognition error rates for both groups, a pattern that was particularly more evident in later blocks for bindings encoded in the inconsistent location condition. Our findings also show that whilst readers with and without dyslexia are capable of using stimulus consistencies in the input—both location and context—to assist in audiovisual learning, readers with dyslexia appear particularly reliant on consistent contextual information. Taken together, our results suggest that whilst readers with dyslexia fail to efficiently learn audiovisual binding as a function of stimulus frequency, they are able to use stimulus consistency—aided by episodic recall—to assist in the learning process.

Digital Game-Based Phonics Instruction Promotes Print Knowledge in Pre-Readers at Cognitive Risk for Dyslexia

Dyslexia is targeted most effectively when (1) interventions are provided preventively, before the onset of reading instruction, and (2) remediation programs combine letter-sound training with phoneme blending. Given the growing potential of technology in educational contexts, there has been a considerable increase of letter-sound trainings embedded in digital serious games. One such intervention is GraphoGame. Yet, current evidence on the preventive impact of GraphoGame is limited by the lack of adaptation of the original learning content to the skills of pre-readers, short training duration, and a restricted focus on explicitly trained skills. Therefore, the current study aims at investigating the impact of a preventive, and pre-reading adapted GraphoGame training (i.e., GraphoGame-Flemish, GG-FL) on explicitly trained skills and non-specifically trained phonological and language abilities. Following a large-scale screening (N = 1225), the current study included 88 pre-reading kindergarteners at cognitive risk for dyslexia who were assigned to three groups training either with GG-FL (n = 31), an active control game (n = 29), or no game (n = 28). Before and after the 12-week intervention, a variety of reading-related skills were assessed. Moreover, receptive letter knowledge and phonological awareness were measured every three weeks during the intervention period. Results revealed significantly larger improvements in the GG-FL group on explicitly trained skills, i.e., letter knowledge and word decoding, without finding transfer-effects to untrained phonological and language abilities. Our findings imply a GG-FL-driven head start on early literacy skills in at-risk children. A follow-up study should uncover the long-term impact and the ability of GG-FL to prevent actual reading failure.

A Storytelling Approach on Vocabulary, Reading, and Letter Sound Fluency of Struggling First Graders With German as Second Language With and Without Behavioral Problems

The number of students learning German as a second language (L2) is steadily increasing. Unfortunately, studies reveal that less-proficient school performance affects a larger proportion of these students and additional behavioral problems can create even greater learning barriers. In order to master a language, the focus is not only on vocabulary, but also on reading, and studies show that multi-component intervention in reading and L2 acquisition is particularly promising. Therefore, this multiple baseline study focuses on a multi-component storytelling intervention on vocabulary, reading, and letter sound fluency of low-achieving first graders with German as L2 with and without behavioral problems (N = 7). The intervention was implemented 3 times a week over a 6-week period. Results show significant large to very large effects on vocabulary and moderate to large effects on letter sound fluency and reading, providing indication for the positive impact of storytelling on multiple aspects simultaneously for the focused sample.

Thai Undergraduate Student Awareness of Regular and Irregular Grapheme-Phoneme Correspondence

<p>Recent events in Thailand in reference to the teaching of phonics for better comprehension of English vocabulary have highlighted the overuse of identifying letter-sound relationships in English by utilizing the familiar Thai orthography to assist developing Thai EFL learners. This paper investigated the long-term effects of using such pedagogy on recognizing regular and irregular Grapheme-Phoneme Correspondences (GPC) in English by Thai undergraduate students. To address this matter, the study used a convenience sampling of 373 first-year university students from 11 general education English classes at a mid-sized private university near Bangkok, Thailand. The familiar English poem <em>I Take It You Already Know</em> was employed for data collection, for it consists of a practical ratio of frequent and infrequent English grapheme-phoneme correspondences. Extensive lists of recognized grapheme-phoneme correspondences were used to identify the frequent or regular, and the infrequent or irregular main phoneme present in each of the 60 most frequently queried content words of the poem. Point-Biserial Correlation was employed to measure the strength of association between the frequency occurrence of the most queried content words from the data set, and the examined weighted word frequency data. The findings suggest that, in general, the Thai undergraduate students demonstrated an overall lack of recognition of regular and irregular Grapheme-Phoneme Correspondences of English. </p>

Characteristics of the preschool home literacy environment which predict writing skills at school

Aspects of the preschool home learning environment which may foster reading development have been identified, although their relationships with spelling and writing remain unclear. The present study explored associations between the preschool home literacy environment (HLE), language and nonverbal abilities and children’s spelling and writing skills measured two years later. A parental questionnaire recorded the reported frequency of pre-schoolers’ code- and meaning-related home literacy experiences, alongside an index of book exposure. One hundred and twenty one children (60 female, Mage = 6:7, SD = 3.67 months) contributed data assessing their transcription skills, indexed by handwriting fluency and word spelling, and translation abilities, indexed by sentence generation and the ability to produce more extended text. Exploratory factor analyses confirmed distinct factors relating to the productivity and complexity of writing samples. Regression analyses revealed that the frequency of preschool code-related, letter-sound interactions explained significant variance in children’s transcription skills at school, independently of earlier language and nonverbal abilities. In contrast, experiences in the preschool HLE were not related to the higher level writing skills of translation and text production. The implications of the findings for our understanding of the cognitive and environmental factors associated with children’s early writing development are discussed.

An eye-tracking study of letter-sound correspondence in Japanese-speaking 2- to 3-year-old toddlers

Although the acquisition of letter-sound correspondences is a critical step in reading development, how and when children develop such correspondence remains relatively unexplored. In this study, we focused on Japanese hiragana letters to examine the implicit letter-sound correspondence using an eye-tracking technique for 80 Japanese-speaking toddlers. The results showed that 32- to 48-month-olds (but not 24- to 32-month-olds) directed their gaze at the target letter. An additional experiment on a letter-reading task showed that 32- to 40-month-olds could barely read the presented hiragana letters. These findings suggest that toddlers have already begun to grasp implicit letter-sound correspondences well before actually acquiring the ability to read letters.