Astrid Geudens

Beyond implicit phonological knowledge: No support for an onset-rime structure in children's explicit phonological awareness.

Abstract The importance of the onset–rime structure in phonological awareness is widely accepted. We focused on Dutch-speaking children’s explicit awareness. Four experiments failed to support the relevance of the onset–rime distinction in this domain. First, prereaders and first-graders found it easier to segment two-phoneme syllables within the rime VC (e.g., / o ː t / ), than between onset and rime in the reversed CV (e.g., / to ː/ ). Second, prereaders did not find it easier to substitute a phoneme in a CV than in a VC. Third, when first-graders were required to segment CVCs, CV strings were left intact more frequently than rimes. Thus, Dutch-speaking children did not treat onsets and rimes as cohesive units of the syllable in tasks tapping explicit awareness. Phonetic factors may play an important role in determining cohesion between phonemes.

Old and new ways to study characteristics of reading disability: The case of the nonword-reading deficit

Theoretical and computational models of reading have traditionally been informed by specific characteristics of disabled readers. One of the most frequently studied marker effects of developmental dyslexia is the nonword-reading deficit. Disabled readers are generally believed to show a specific problem in reading nonwords. This study presents a survey of frequently cited methods used to examine this effect by controlling general reading ability in various ways. An extensive analysis, however, shows that the majority of these methods (grade equivalents scores, the reading-level match design, and interactions in a chronological-age match design) actually fail to account for confounding variables such as age and general slowing, potentially affecting the conclusions reached. To alleviate this problem, an alternative method is presented: i.e. state trace analysis. Applying this method in a sample of Dutch disabled and typical readers, the results revealed an absence of a nonword-reading deficit in the disabled readers. Furthermore, after controlling for their decoding ability, disabled readers showed inferior word reading performance, which strongly suggests that the fundamental problem of disabled readers does not relate to the reading of nonwords but concerns their (dis)ability to acquire orthographic (word-specific) knowledge. Further, predictions for disabled readers in an inconsistent orthography like English are formulated. Finally, based on a review of neurobiological studies, implications for theories of reading disability are discussed.

Segmenting two-phoneme syllables: developmental differences in relation with early reading skills.

This study explored developmental differences in childrens segmentation skills of VC and CV syllables (e.g., /af/ and /fa/) in relation to their early reading abilities. To this end, we followed a subgroup of Dutch speaking prereaders who participated in, and replicated the segmentation task in first grade, at the outset of phonics reading instruction. Reading abilities were assessed after 6 and 9 months. First, we confirmed that VCs offer an easier context to isolate phonemes than CVs. Second, matching analyses showed that this development from VC to CV segmentation posed comparatively increasing difficulties for poor segmenters. Third, this qualitatively different development was reflected in early reading performance. Our data emphasize the importance of phonetic factors and instruction-based experiences in phonological development.

The nonword-reading deficit of disabled readers: a developmental interpretation.

This article presents empirical evidence challenging the received wisdom that a nonword-reading deficit is a characteristic trait of disabled readers. On the basis of 2 large-scale empirical studies using the reading-level match design, we argue that a nonword-reading deficit is the consequence of normal developmental differences in word-specific knowledge between disabled readers and younger normal readers (both groups being matched on real-word reading). The first study shows that the nonword-reading deficit varies as a function of age and reading level and that this deficit is not typical for disabled readers. The second study demonstrates that a nonword-reading deficit crucially depends on the sensitivity of the matching word reading task to detect age-related differences in word-specific knowledge between disabled and normal readers. We clarify how these findings can be interpreted within the current framework of the phonological deficit hypothesis and discuss implications for theories of reading development.

Onsets and Rimes in a Phonologically Transparent Orthography: Differences between Good and Poor Beginning Readers of Dutch

This study investigates whether beginning readers of Dutch develop onset-rime units when these units are emphasized in their reading method, even when the orthography is transparent at the grapheme-phoneme level. The speed of naming intact pseudowords (wot) was compared with the speed of naming pseudowords with an onset-rime (w ot) or body-coda (wo t) segmentation. Whereas body-coda items consistently slowed down naming for both good and poor readers, the onset-rime effect covaried with reading skill: it changed from inhibitory for good readers to facilitatory for poor readers. Two alternative explanations are proposed.

Beyond global differences between monolingual and bilingual children on the nonword repetition task: retention skills for phonemes’ identity and serial order

This study compared NRT-performance in monolingual Dutch and bilingual Turkish–Dutch third-graders using a Dutch Nonword Repetition Task (NRT). Several novel response analyses at the phoneme level were applied to further understand the earlier reported overall accuracy differences in NRT-performance between bilinguals and monolinguals. Analyses in which the retention of phonemes and the retention of their serial order were disentangled revealed that monolinguals outperform bilinguals with respect to the retention of the phonemes themselves. However, both groups did not differ in their retention of the serial order of correctly recalled phonemes. Furthermore, this study confirms that expressive vocabulary skills do affect overall NRT-performance. The results are discussed in light of current short-term memory (STM) models and the role of long-term phonological knowledge in NRT tasks.