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Phonological impairment

Steve Majerus, Nelson Cowan
Verbal short-term memory (STM) impairment is one of the most consistent associated deficits observed in developmental reading disorders such as dyslexia. Few studies have addressed the nature of this STM impairment, especially as regards the ability to temporarily store serial order information. This question is important as studies in typically developing children have shown that serial order STM abilities are predictors of oral and written language development. Associated serial order STM deficits in dyslexia may therefore further increase the learning difficulties in these populations...
2016: Frontiers in Psychology
Shula Chiat, Kamila Polišenská
Purpose: As a recognized indicator of language impairment, nonword repetition has unique potential for distinguishing language impairment from difficulties due to limited experience and knowledge of a language. This study focused on a new Crosslinguistic Nonword Repetition framework, comprising 3 tests that vary the phonological characteristics of nonwords, in the quest for an assessment that minimizes effects of language experience and knowledge and thereby maximizes potential for assessing children with diverse linguistic experience...
October 17, 2016: Journal of Speech, Language, and Hearing Research: JSLHR
Delphine Raucher-Chéné, Amélie M Achim, Arthur Kaladjian, Chrystel Besche-Richard
BACKGROUND: One of the main features of bipolar disorder (BD), besides mood dysregulation, is an alteration of the structure of language. Bipolar patients present changes in semantic contents, impaired verbal associations, abnormal prosody and abnormal speed of language highlighted with various experimental tasks. Verbal fluency tasks are widely used to assess the abilities of bipolar patients to retrieve and produce verbal material from the lexico-semantic memory. Studies using these tasks have however yielded discrepant results...
October 5, 2016: Journal of Affective Disorders
Iliana I Karipidis, Georgette Pleisch, Martina Röthlisberger, Christoph Hofstetter, Dario Dornbierer, Philipp Stämpfli, Silvia Brem
Learning letter-speech sound correspondences is a major step in reading acquisition and is severely impaired in children with dyslexia. Up to now, it remains largely unknown how quickly neural networks adopt specific functions during audiovisual integration of linguistic information when prereading children learn letter-speech sound correspondences. Here, we simulated the process of learning letter-speech sound correspondences in 20 prereading children (6.13-7.17 years) at varying risk for dyslexia by training artificial letter-speech sound correspondences within a single experimental session...
October 14, 2016: Human Brain Mapping
Eddy Cavalli, Lynne G Duncan, Carsten Elbro, Abdessadek El Ahmadi, Pascale Colé
A phonological deficit constitutes a primary cause of developmental dyslexia, which persists into adulthood and can explain some aspects of their reading impairment. Nevertheless, some dyslexic adults successfully manage to study at university level, although very little is currently known about how they achieve this. The present study investigated at both the individual and group levels, whether the development of another oral language skill, namely, morphological knowledge, can be preserved and dissociated from the development of phonological knowledge...
October 13, 2016: Annals of Dyslexia
Vânia de Aguiar, Roelien Bastiaanse, Gabriele Miceli
Background: Demographic and clinical predictors of aphasia recovery have been identified in the literature. However, little attention has been devoted to identifying and distinguishing predictors of improvement for different outcomes, e.g., production of treated vs. untreated materials. These outcomes may rely on different mechanisms, and therefore be predicted by different variables. Furthermore, treatment features are not typically accounted for when studying predictors of aphasia recovery. This is partly due to the small numbers of cases reported in studies, but also to limitations of data analysis techniques usually employed...
2016: Frontiers in Human Neuroscience
Bronwyn Carrigg, Louise Parry, Elise Baker, Lawrence D Shriberg, Kirrie J Ballard
OBJECTIVE: This study describes the phenotype in a large family with a strong, multigenerational history of severe speech sound disorder (SSD) persisting into adolescence and adulthood in approximately half the cases. Aims were to determine whether a core phenotype, broader than speech, separated persistent from resolved SSD cases; and to ascertain the uniqueness of the phenotype relative to published cases. METHOD: Eleven members of the PM family (9-55 years) were assessed across cognitive, language, literacy, speech, phonological processing, numeracy, and motor domains...
October 5, 2016: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
Kali Woodruff Carr, Ahren B Fitzroy, Adam Tierney, Travis White-Schwoch, Nina Kraus
Speech communication involves integration and coordination of sensory perception and motor production, requiring precise temporal coupling. Beat synchronization, the coordination of movement with a pacing sound, can be used as an index of this sensorimotor timing. We assessed adolescents' synchronization and capacity to correct asynchronies when given online visual feedback. Variability of synchronization while receiving feedback predicted phonological memory and reading sub-skills, as well as maturation of cortical auditory processing; less variable synchronization during the presence of feedback tracked with maturation of cortical processing of sound onsets and resting gamma activity...
October 1, 2016: Brain and Language
Victoria Leong, Usha Goswami
Over 30 years ago, it was suggested that difficulties in the 'auditory organization' of word forms in the mental lexicon might cause reading difficulties. It was proposed that children used parameters such as rhyme and alliteration to organize word forms in the mental lexicon by acoustic similarity, and that such organization was impaired in developmental dyslexia. This literature was based on an 'oddity' measure of children's sensitivity to rhyme (e.g. wood, book, good) and alliteration (e.g. sun, sock, rag)...
September 22, 2016: Developmental Science
Octávio Moura, Marcelino Pereira, Cláudia Alfaiate, Eva Fernandes, Boavida Fernandes, Susana Nogueira, Joana Moreno, Mário R Simões
INTRODUCTION: This study aimed to investigate the neurocognitive functioning of children with developmental dyslexia (DD) and attention-deficit/hyperactivity disorder (ADHD). METHOD: Four groups of children between the ages of 8 and 10 years participated in the study: typically developing children (TDC; N = 34), children with DD-only (N = 32), children with ADHD-only (N = 32), and children with DD+ADHD (N = 18). RESULTS: Children with DD and ADHD exhibited significant weaknesses on almost all neurocognitive measures compared with TDC...
September 12, 2016: Journal of Clinical and Experimental Neuropsychology
Rita Obeid, Patricia J Brooks, Kasey L Powers, Kristen Gillespie-Lynch, Jarrad A G Lum
Impairments in statistical learning might be a common deficit among individuals with Specific Language Impairment (SLI) and Autism Spectrum Disorder (ASD). Using meta-analysis, we examined statistical learning in SLI (14 studies, 15 comparisons) and ASD (13 studies, 20 comparisons) to evaluate this hypothesis. Effect sizes were examined as a function of diagnosis across multiple statistical learning tasks (Serial Reaction Time, Contextual Cueing, Artificial Grammar Learning, Speech Stream, Observational Learning, and Probabilistic Classification)...
2016: Frontiers in Psychology
Sebastian Poloczek, Lucy A Henry, Henrik Danielson, Gerhard Büttner, Claudia Mähler, David J Messer, Kirsten Schuchardt, Mariët J van der Molen
BACKGROUND: There is a long-held view that verbal short-term memory problems of individuals with intellectual disabilities (ID) might be due to a deficit in verbal rehearsal. However, the evidence is inconclusive and word length effects as indicator of rehearsal have been criticised. AIM & METHOD: The aim of this multi-site European study was to investigate verbal rehearsal in adolescents with mild ID (n=90) and a comparison group of typically developing children matched individually for mental age (MA, n=90)...
November 2016: Research in Developmental Disabilities
Juan J Buiza, María José Rodríguez-Parra, Mercedes González-Sánchez, José A Adrián
BACKGROUND: The diagnosis of Specific Language Impairment (SLI) is very complex, given the variety of clinical pictures described in this disorder. Knowledge about the linguistic markers of SLI can facilitate its differentiation from the normal profile of language development. These markers can also be used as tools that may improve diagnostic. AIMS: To determine which psycholinguistic markers best discriminate Spanish-speaking children with SLI from children with typical language development...
November 2016: Research in Developmental Disabilities
Jeffrey G Malins, Nina Gumkowski, Bonnie Buis, Peter Molfese, Jay G Rueckl, Stephen J Frost, Kenneth R Pugh, Robin Morris, W Einar Mencl
In the current study, we present a novel fMRI protocol in which words, pseudowords, and other word-like stimuli are passively presented in a rapid, sequential fashion. In this "fast" localizer paradigm, items are presented in groups of four; within sets, words are related in orthographic, phonological, and/or semantic properties. We tested this protocol with a group of skilled adult readers (N=18). Analyses uncovered key regions of the reading network that were sensitive to different component processes at the group level; namely, left fusiform gyrus as well as the pars opercularis subregion of inferior frontal gyrus were sensitive to lexicality; several regions including left precentral gyrus and left supramarginal gyrus were sensitive to spelling-sound consistency; the pars triangularis subregion of inferior frontal gyrus was sensitive to semantic similarity...
August 31, 2016: Neuropsychologia
Gayle Beam Long, Robert Allen Fox, Ewa Jacewicz
Purpose: The purpose of this study was to determine whether the underlying phonological impairment in dyslexia is associated with a deficit in categorizing regional dialects. Method: Twenty adults with dyslexia, 20 school-age children with dyslexia, and 40 corresponding control listeners with average reading ability listened to sentences produced by multiple talkers (both sexes) representing two dialects: Midland dialect in Ohio (same as listeners' dialect) and Southern dialect in Western North Carolina...
August 30, 2016: Journal of Speech, Language, and Hearing Research: JSLHR
Manuela Lavelli, Marinella Majorano
PURPOSE: The purpose of the study was to investigate the role that cospeech gestures play in lexical production in preschool-age children with expressive specific language impairment (E-SLI). METHOD: Fifteen preschoolers with E-SLI and 2 groups of typically developing (TD) children matched for chronological age (n = 15, CATD group) and for language abilities (n = 15, LATD group) completed a picture-naming task. The accuracy of the spoken answers (coded for types of correct and incorrect answers), the modality of expression (spoken and/or gestural), types of gestures, and semantic relationship between gestures and speech produced by children in the different groups were compared...
August 1, 2016: Journal of Speech, Language, and Hearing Research: JSLHR
D T Truong, L D Shriberg, S D Smith, K L Chapman, A R Scheer-Cohen, M M C DeMille, A K Adams, A Q Nato, E M Wijsman, J D Eicher, J R Gruen
Verbal trait disorders encompass a wide range of conditions and are marked by deficits in five domains that impair a person's ability to communicate: speech, language, reading, spelling, and writing. Nonword repetition is a robust endophenotype for verbal trait disorders that is sensitive to cognitive processes critical to verbal development, including auditory processing, phonological working memory, and motor planning and programming. In the present study, we present a six-generation extended pedigree with a history of verbal trait disorders...
December 2016: Human Genetics
Stephen C Walenchok, Michael C Hout, Stephen D Goldinger
During visual search, people are distracted by objects that visually resemble search targets; search is impaired when targets and distractors share overlapping features. In this study, we examined whether a nonvisual form of similarity, overlapping object names, can also affect search performance. In three experiments, people searched for images of real-world objects (e.g., a beetle) among items whose names either all shared the same phonological onset (/bi/), or were phonologically varied. Participants either searched for 1 or 3 potential targets per trial, with search targets designated either visually or verbally...
August 16, 2016: Attention, Perception & Psychophysics
Simone Cutini, Dénes Szűcs, Natasha Mead, Martina Huss, Usha Goswami
Phase entrainment of neuronal oscillations is thought to play a central role in encoding speech. Children with developmental dyslexia show impaired phonological processing of speech, proposed theoretically to be related to atypical phase entrainment to slower temporal modulations in speech (<10Hz). While studies of children with dyslexia have found atypical phase entrainment in the delta band (~2Hz), some studies of adults with developmental dyslexia have shown impaired entrainment in the low gamma band (~35-50Hz)...
August 9, 2016: NeuroImage
Charles Hulme, Margaret J Snowling
PURPOSE OF REVIEW: We review current knowledge about the nature of reading development and disorders, distinguishing between the processes involved in learning to decode print, and the processes involved in reading comprehension. RECENT FINDINGS: Children with decoding difficulties/dyslexia experience deficits in phoneme awareness, letter-sound knowledge and rapid automatized naming in the preschool years and beyond. These phonological/language difficulties appear to be proximal causes of the problems in learning to decode print in dyslexia...
August 4, 2016: Current Opinion in Pediatrics
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