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Phonological disorders

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Phonological disorders are speech sound disorders characterized by patterns of sound errors that affect the ability to produce and organize speech sounds according to the rules of a language. These disorders impact communication and can hinder language development, often requiring assessment and intervention by speech-language pathologists.
lightbulbAbout this topic
Phonological disorders are speech sound disorders characterized by patterns of sound errors that affect the ability to produce and organize speech sounds according to the rules of a language. These disorders impact communication and can hinder language development, often requiring assessment and intervention by speech-language pathologists.

Key research themes

1. How can articulatory phonology unify phonetic and phonological perspectives in understanding childhood speech sound disorders?

This theme investigates integrating linguistic (phonological) and motor (phonetic/articulatory) processes within a unified articulatory phonology (AP) framework to better characterize, diagnose, and treat speech sound disorders (SSD) in children. It explores the complex interactions between distal causes (e.g., genetics), proximal processing deficits (e.g., motor control, phonological representation), and observed speech symptoms, aiming to overcome limitations of traditional dichotomies separating articulation and phonology.

Key finding: This paper establishes that the articulatory gesture—serving simultaneously as a unit of phonological contrast and articulatory movement—provides a robust explanatory framework that reconciles the phonetic-phonology dichotomy... Read more
Key finding: Longitudinal data reveal that the majority of children (85%) initially present phonological errors, while a minority show concurrent articulation and phonological errors. The study highlights developmental shifts where some... Read more
Key finding: Utilizing Optimality Theory, this study identifies 'phonological conspiracies'—co-occurring error patterns that collectively serve to eliminate fricatives from the phonetic inventory in a child with a phonological delay. By... Read more
Key finding: This work translates phonological and articulatory knowledge, rooted in methods such as the Metaphon approach, into an engaging mobile serious game for children with phonological disorders. The positive user experience among... Read more
Key finding: This collected work emphasizes that advances in phonological theory—including psycholinguistic and motor considerations—have broadened understanding of phonological disorders beyond mere error description to explanatory... Read more

2. What is the role of phonological awareness deficits in developmental language disorders and dyslexia, and how can this inform assessment and intervention?

This research theme centers on the nature and measurement of phonological awareness deficits in children with developmental language disorder (DLD) and dyslexia, including their neurocognitive underpinnings. It evaluates phonological processing impairments such as phonemic segmentation and manipulation, rapid automatized naming, and phonological working memory, and explores how these deficits correlate with reading disabilities and inform effective therapeutic approaches.

Key finding: A systematic literature review establishes that children with DLD show significant delays and deficits in multiple components of phonological awareness, which are closely associated with their language impairments. The paper... Read more
Key finding: This review consolidates evidence supporting the phonological deficit theory as a core explanation for developmental dyslexia, highlighting impairments in phonological awareness, phonological short-term memory, and rapid... Read more
Key finding: Employing EEG and novel machine-learning analyses, the study identifies neural congruency components associated with phonological awareness tasks. It confirms the unitary structure of phonological awareness from a neural... Read more
Key finding: The comparative intervention study with 60 Arabic-speaking children with SLI and SSD demonstrates that while both phonological therapy (PT) and phonological awareness (PA) training improve language and phonological... Read more
Key finding: This foundational paper articulates the linguistic underpinnings of reading and reading disorders, emphasizing the shared phonological processing mechanisms between oral language and reading. It outlines models whereby... Read more

3. How do phonological and articulatory impairments interact in neurodevelopmental disorders and what are the implications for speech intelligibility and therapy?

This research area investigates the interplay between phonological representations and articulatory motor planning deficits in neurodevelopmental disorders such as dyslexia, Williams syndrome, and motor coordination disorder, extending to acquired disorders like aphasia and foreign accent syndrome. It examines neural, behavioral, and acoustic correlates of speech impairment and explores measurement techniques and therapeutic strategies to improve speech intelligibility and functional communication.

Key finding: This study establishes that adults with dyslexia and comorbid developmental motor coordination disorder exhibit persistent articulatory impairments alongside phonemic awareness deficits. The findings support a multifactorial... Read more
Key finding: Analysis of spontaneous speech in children and adults with Williams syndrome reveals atypical and protracted phonological development, with persistent phonological processes and asynchronous qualitative patterns compared to... Read more
Key finding: A single-case study of aphasia exhibits mixed features traditionally assigned to conduction aphasia and apraxia of speech, with repeated attempts at word production and articulatory errors indicating deficits in transferring... Read more
Key finding: Presentation of a patient with foreign accent syndrome following a right temporo-occipital lesion shows altered segmental and prosodic speech features that resemble regional dialectal accents. The study documents phonetic and... Read more

All papers in Phonological disorders

Purpose: Adults with intellectual disabilities (ID) often show reduced speech intelligibility, which affects their social interaction skills. This study aims to establish the main predictors of this reduced intelligibility in order to... more
Background and purpose: Speech sound disorders are the most common speech disorders in children which are associated with other problems and can lead to social problems, attention deficit and academic skills challenges. The aim of this... more
Background and purpose: Speech sound disorders are the most common speech disorders in children which are associated with other problems and can lead to social problems, attention deficit and academic skills challenges. The aim of this... more
This paper presents the concept and the user evaluation study of the first Super-Fon's prototype, which is a mobile health app with a serious game approach for Android Tablets. It was developed with the main goal of working as a... more
Objective Reviewing the literature related to the use of polysyllabic words in the assessment of speech sound disorders (SSD) in children have indicated the necessity of using these words for providing additional information such as... more
Background and Objectives: This cross-sectional study aims to explore the effect of vocal warmup and cool-down exercises (VWCE) on the acoustic characteristics of speech and language pathologists (SLPs). Methods: This pilot study was... more
Background and Aim: Speech errors in children with Down Syndrome (DS) are inconsistent, such that in articulating the same lexical item, the children produce it in different ways. The Core Vocabulary Treatment (CVT) has been designed to... more
Objective Reviewing the literature related to the use of polysyllabic words in the assessment of speech sound disorders (SSD) in children have indicated the necessity of using these words for providing additional information such as... more
Background and Aim: Speech and language pathologists (SLP) often refer to phonological data as part of their assessment protocols in evaluating the communication skills of children. The aim of this study was to develop the Persian version... more
Objective In the absence of an age normed developmental battery for Persian, the major objectives of this research are to develop a reliable and valid clinical linguistic battery to collect normative data from 3 to 7-year-old healthy... more
Disleksija je, prema određenju Međunarodne udruge za disleksiju (International Dyslexia Association), specifična teškoća učenja neurobiološkog podrijetla, koju karakteriziraju teškoće točnog i(li) tečnog prepoznavanja riječi, teškoće... more
This paper presents the concept and the user evaluation study of the first Super-Fon's prototype, which is a mobile health app with a serious game approach for Android Tablets. It was developed with the main goal of working as a... more
U radu je prikazan pregled pristupa defi niranju i razmatranju razvoja fonoloških vještina u cilju determiniranja i razumijevanja prirode razvojnog fonološkog poremećaja. Istaknuto je da se u ranijim radovima razvojni fonološki poremećaj... more
Background and Aim: Some children with speech sound disorder (SSD) have difficulty with phonological awareness skills; therefore, the purpose of this study was to survey the correlation between phonological processes and phonological... more
Background and Aim: The ability of conversational repair is a subset of pragmatic language. When the listener does not understand the speaker's intention, and the speaker cannot find a way of repairing the conversation to make his/her... more
Stress deafness is the difficulty in the perception of stress in the speakers of a language which does not deal with its contrastive function (Peperkamp et al., 2010). According to stress deafness typology proposed by Dupoux & Peperkamp... more
Background and Aim Dysphagia is a common problem in people with Down Syndrome. In laboratory studies, electromyography can be used to evaluate mastication. This study aims to compare Electromyography (EMG) of the masseter and temporalis... more
This paper presents the concept and the user evaluation study of the first Super-Fon's prototype, which is a mobile health app with a serious game approach for Android Tablets. It was developed with the main goal of working as a... more
Background and Aims The intelligibility context scale (ICS) is the first screening tool for the intelligibility of speech. The ICS assesses parents’ perceptions of their child’s speech clarity in real situations when talking with... more
Author Address 1. MA, Department of Sports sciences, University of Isfahan, Isfahan, Iran; 2. Associate Professor, Department of Sports sciences, University of Isfahan, Isfahan, Iran; 3. Assistant Professor, Department of Speech Therapy,... more
In dem vorliegenden Artikel werden die Sprechdaten eines deutschen Kindes mit einer expressiven spezifischen Sprachentwicklungsstörung (SSES) in Hinsicht auf zwei Themengebiete analysiert. Das erste Themengebiet beinhaltet die Analyse der... more
Conclusion: The study showed high and very high reliability for control error measures during target tracking tasks in sagittal transverse torque plane in asymptomatic subjects. Therefore this performance may be used as a test in trunk... more
Background and Aim: In children's speech disorders, assessing the percentage index of speech intelligibility is important. Expression of single words and sentences in some ways, such as the effect of voices on eachother, is different,... more
Purpose: Phonation or the generation of audible sound energy is caused by muscular and aerodynamic activities that affect the vocal cords. The main objective of this study was to determine aerodynamic parameters in three categories of... more
Repetition data were collected from aphasic patients with differing symptoms: All of the test items were monosyllabic and controlled for their phonological markedness calculated by the sonority ranks of demisyllables. Two types of results... more
by Sascha Dümig and 
1 more
In dem vorliegenden Artikel werden die Sprechdaten eines deutschen Kindes mit einer expressiven spezifischen Sprachentwicklungsstörung (SSES) in Hinsicht auf zwei Themengebiete analysiert. Das erste Themengebiet beinhaltet die Analyse der... more
Objective: Unilateral Vocal Fold Paralysis (UVFP) and vocal fold Polyps lead to some vocal fold asymmetry and consequently, changing the acoustic characteristics. In this study, we aimed reporting these acoustic changes due to the... more
Copyright © 2016, MEJDS. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and... more
Background and Aim: In children's speech disorders, assessing the percentage index of speech intelligibility is important. Expression of single words and sentences in some ways, such as the effect of voices on eachother, is different,... more
Background and Aim: Auditory discrimination is one component of central auditory processing skills or auditory perception, that has an important role in acquisition and production of speech sounds. Auditory discrimination test is a tool... more
Background and Aim: Auditory discrimination is one component of central auditory processing skills or auditory perception, that has an important role in acquisition and production of speech sounds. Auditory discrimination test is a tool... more
Background and Aim: Oral feeding difficulties are common in children with cerebral palsy. Early oral motor interventions may improve oral feeding skills in these children. The purpose of this study is to evaluate the effect of... more
Background and aim: The communicative functioning of children who stutter can be assessed in a variety of ways. Standardized tests are an important tool to assess communication skills particularly in stuttering children .The purpose of... more
Conclusion: The study showed high and very high reliability for control error measures during target tracking tasks in sagittal transverse torque plane in asymptomatic subjects. Therefore this performance may be used as a test in trunk... more
Objective Non-progressive cerebral palsy (CP) is due to abnormal development of brain and or brain damages before, during, or after birth. The reason of cerebral palsy is brain damage or its abnormal development. Most of these problems... more
The purpose of this study was to investigate the shooting accuracy and leg muscles fatigue of male shooters using air pistol after 8 weeks of resistance training. Methods The study population consisted of all elite male shooters from... more
The purpose of this study was to investigate the shooting accuracy and leg muscles fatigue of male shooters using air pistol after 8 weeks of resistance training. Methods The study population consisted of all elite male shooters from... more
Objective The purpose of this study was to investigate the shooting accuracy and leg muscles fatigue of male shooters using air pistol after 8 weeks of resistance training. Methods The study population consisted of all elite male shooters... more
The aim of this study was to evaluate of three observational exercise methods, including immediate, interspersed and combination exercise on performance of ju-no kata karate form. For this purpose, 45 adolescents 9-12 years old based on... more
There is no doubt that augmented feedback has an important role in improving learning. However, it is the content of the feedback which is challenging. The aim of the present study was to examine the effect of feedback on successful... more
Introduction: Changes in speech production are expected with aging. These changes are affected by changes in anatomy and physiology of speech production system, sensory feedbacks, motor control, and central processing of speech in older... more
Background and Aim: About 1.5 percent of exceptional children suffer from impaired hearing and this factor affects the teaching and learning process. The aim of this study was to investigate the effect of frequency of knowledge of results... more
1 ‫ﻧﮋاد‬ ‫ﺻﺪاﻗﺖ‬ ‫اﺣﺴﺎن‬ ، 2 ، ‫ﻣﻮﺳﻮي‬ ‫ﺟﻮاد‬ ‫ﺳﯿﺪ‬ ‫دﮐﺘﺮ‬ 3 ‫ﻃﺎﻟﺒﯿﺎن‬ ‫ﺳﻌﯿﺪ‬ ‫دﮐﺘﺮ‬ ، 4 ‫ﭘﺮﻧﯿﺎن‬ ‫ﻣﺤﻤﺪ‬ ‫دﮐﺘﺮ‬ ، ‫ﭘﻮر‬ 5 ‫زاده‬ ‫ﻫﺎدي‬ ‫ﻫﻤﮑﺎران‬ ‫و‬ 55 ‫ﻣ‬ ‫ﺗﻮاﻧﺒﺨﺸﯽ‬ ‫داﻧﺸﮑﺪه‬ ‫ـ‬ ‫ﻧﻮﯾﻦ‬ ‫ﺗﻮاﻧﺒﺨﺸﯽ‬ ‫ﭘﮋوﻫﺸﯽ‬ ‫ﻋﻠﻤﯽ‬ ‫ﺠﻠﻪ‬ ‫ﭘﺰﺷ‬ ‫ﻋﻠﻮم‬... more
پژوهش حاضر تفاوت توليد و درک گفتار بين دانش آموزان عادي و کم‌توان ذهني شهرستان سيمرغ شهر کياکلا را بررسي مي کند. هدف از پژوهش حاضر این است که ميخواهيم بدانيم توليد و درک گفتار دانش آموزان عادي دختر و پسر و توليد و درک گفتار دانش... more
‫دوره‬ ‫ﺗﻬﺮان‬ ‫ﭘﺰﺷﮑﯽ‬ ‫ﻋﻠﻮم‬ ‫داﻧﺸﮕﺎه‬ ‫ـ‬ ‫ﺗﻮاﻧﺒﺨﺸﯽ‬ ‫داﻧﺸﮑﺪه‬ ‫ـ‬ ‫ﻧﻮﯾﻦ‬ ‫ﺗﻮاﻧﺒﺨﺸﯽ‬ ‫ﭘﮋوﻫﺸﯽ‬ ‫ﻋﻠﻤﯽ‬ ‫ﻣﺠﻠﻪ‬ 8 ‫ﺷﻤﺎره‬ 2 ‫ﺗﺎﺑﺴﺘﺎن‬ 1393 ‫ﭘﮋوﻫﺸﯽ‬ ‫ﻣﻘﺎﻟﻪ‬ ‫ﺑﺮرﺳﯽ‬ ‫وﺿﻌﯿﺖ‬ ‫ﮐﻨﺶ‬ ‫ﭘﺮﯾﺸﯽ‬ ‫دﻫﺎﻧﯽ‬ ‫و‬ ‫ﮐﻼﻣﯽ‬ ‫و‬ ‫ﻣﯿﺰان‬ ‫ارﺗﺒﺎط‬ ‫اﯾﻦ‬ ‫دو‬... more
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