Dionysus Tafiadis

Dionysus Tafiadis
University of Ioannina | UOI · Speech Language Therapy

PhD Speech Language Pathology - Neuroscience

About

171
Publications
35,700
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368
Citations
Introduction
Dr. Tafiadis was born in Agrinio-Greece. In 2003 he received his Hons.B.Sc.-SLT from University of Patras-Greece. In 2008 he acquired his M.Sc. in SLT, University of Ioannina-Greece. His PhD was in Dementia, Medicine School-University of Ioannina. Form 2005 till July 2018 he was teaching at the Department of SLT (TEI of Epirus) and From 2018 he is Assistant Professor (Full tenure) at Department of SLT-University of Ioannina. From 2018 teaches at European University of Cyprus at MSc. level.
Additional affiliations
October 2019 - present
University of Ioannina
Position
  • Professor (Assistant)
September 2018 - October 2018
University of Ioannina
Position
  • Professor (Assistant)
June 2018 - present
European University Cyprus
Position
  • Professor (Assistant)
Description
  • Visiting Assistant Professor!

Publications

Publications (171)
Article
Full-text available
In recent decades, teamwork, and specifically the role of the interdisciplinary team, have become increasingly important in the treatment of various conditions. The interdisciplinary team increases the quality of the performance of those involved, maximizing the skills for optimal functioning within the team, and thus optimizing the state of health...
Article
This study analyzes performance on both a Semantic and a Letter verbal fluency (VF) task in school-age children with high-functioning autism spectrum disorder (HF-ASD) (n = 20) and without ASD (n = 20) and investigates the relationship between VF indicators and age, verbal and non-verbal IQ, ASD severity, and attention deficit hyperactivity disorde...
Article
Background: Diadochokinetic rates tasks are frequently used for the assessment of diadochokinesia (DKK) in young and elderly adults. However, there is scarce research on healthy elderly adults over 65 years old, and little is known about the effect of different types of stimuli (non-words/real words) in this specific population. Furthermore, the cu...
Article
Purpose: Well-specified phonological representations are important for the development of spoken and written language. This study investigates the types of speech errors and the quality of phonological representations in Greek-speaking school-age children with high-functioning autism spectrum disorder (HF-ASD), as well as the relationship between s...
Article
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This study provides a preliminary validation of a Greek Sentence Repetition Task (SRT) with a sample of 110 monolingual and bilingual typically developing (TLD) children and examines the test’s ability to distinguish between Greek monolingual children and age-matched Albanian-Greek bilinguals using a Receiver Operating Characteristics (ROC) analysi...
Article
Introduction: The present study aims to be the first to validate the Tuokko version of the Clock Drawing Test (CDT) and estimate its cutoff score after its translation into the Greek language and administration in the Greek population. Methods: One hundred and thirty-two individuals participated in this study [60 with Good Cognitive Health (GCH)...
Article
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Background Caregivers of children with autism spectrum disorder (ASD) are sensitive to the internalisation of the stigma, known as affiliate stigma, resulting in reduced self-esteem, isolation and poor psychological well-being. Aims This study aims to validate the Greek version of the Affiliate Stigma Scale (ASS) among mothers of children with ASD...
Article
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Purpose of Review Feeding interventions, including oral motor and oral sensory therapy, potentially benefit feeding skills, while enhancing growth to children with neurodevelopmental disorders. The aim of the present systematic review was to investigate the effectiveness of oral sensorimotor intervention in children who experience feeding and swall...
Article
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This study examined the performance of Greek monolingual typically developing (TD) children on diadochokinetic (DDK) rates in real words and non-words and attempted to establish normative data for Greek. The effects of age, type of stimuli and gender were investigated. A total of 380 children aged 4.0–15.0 years as well as a control group of 313 ad...
Conference Paper
Full-text available
Voice assessment consists of many methods, amongst them being the Voice Handicap Index (VHI) which is a non-interventional self-reported questionnaire. This research determined and interpreted the cutoff points (COPs) of the Receiver Operating Characteristic (ROC) curves (signal processing) of the standardized VHI Hellenic version along with the Gr...
Conference Paper
Currently, the needs for new technologies are rising and especially due to Covid-19. The world is changing into a digital theater of businesses and educational processes. Consequently, tele-health is constantly enriched with new scientific areas of expertise, a fact that gives a new and promising perspective for people who cannot reach in-time a sp...
Conference Paper
Information and Communication Technologies (ICTs) have been utilized in the educational process, enriching and enhancing the traditional teaching methods. The purpose of the current study was to explore the potential of utilizing ICTs as an educational and therapeutic tool in preschool children with speech and language difficulties in the Greek lan...
Article
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The aim of this study is to explore if there is correlation between the typical voice classification and oropharyngeal anatomy, using cervical posterior-anterior radiography on professional singers in Epirus, Greece. Methods: 70 professional singers, 35 men and 35 women, were recruited for this study. All participants underwent a cervical posterior...
Article
Language sampling (LS) variables, such as setting, communication partner, language sample size, language sampling context, materials, equipment, transcription, and analysis of transcripts, impact language sample analysis (LSA) measures. The primary aim of the present study was to identify and summarize LS procedures used worldwide, in order to prop...
Article
The study aimed at evaluating the diadochokinetic (DDK) skills of Greek-speaking preschool children with Phonological Disorder (PD) by means of a structured evaluation protocol and at proposing cut-off points for children at risk of speech impairment. The participants were 36 children with PD and 60 typically developing (TD) peers. The groups were...
Presentation
Full-text available
Background: Given “the bilingual advantage”, both in terms of cognitive and linguistic development, which has been extensively discussed in the relevant literature [1], recent research has set out to examine the possibility that bilingualism can function in a compensatory way for students with learning difficulties or in even for students in the au...
Poster
Background: Speech language pathologists always assess the resonant mechanism in order to determine the occurrence of nasality. There are two ways of assessing nasality (a) the clinical assessment and (b) laboratory and imaging techniques. Particularly, for the clinical evaluation of nasalance the literature suggests different approaches on how it...
Poster
Background: Resonance is the result of the transferred sound produced by the vocal folds till to oral and/or nasal cavity. The “normal” resonance is a balance between the energy of oral and nasal sounds. In some cases, during oral production the speech sounds too much or too little nasal and that probably results to a resonance disorder. In clinica...
Poster
Background: Resonance disorders present usually as deviations of the quality of nasalance (e.g. hypernasality, hyponasality). In the literature auditory-perceptual methods for the evaluation of nasalance were suggested. Those methods rely on the clinical ability and the experiences of a listener to recognize if the speech-voice production is inadeq...
Article
Objective: To investigate the predictive value of certain psychological factors on the quality of life (QoL) of patients with head and neck cancer (HNC) after radiotherapy. Methods: Depressive and anxiety symptoms (HADS), illness perceptions (IPQ-R), coping strategies (Brief COPE) and QoL (EORTC-QLQ-C30 and EORTC-QLQ-H&N35) were assessed in fifty...
Article
Full-text available
ABSTRACT Objective: To investigate the predictive value of certain psychological factors on the quality of life (QoL) of patients with head and neck cancer (HNC) after radiotherapy. Methods: Depressive and anxiety symptoms (HADS), illness perceptions (IPQ-R), coping strategies (Brief COPE) and QoL (EORTC-QLQ-C30 and EORTC-QLQ-H&N35) were assessed i...
Article
The variety described here is Pontic Greek (ISO 639 name: pnt), and specifically the variety that originates from Trapezounta in Asia Minor (present-day Trabzon in Turkey) as spoken today in Etoloakarnania, Greece by second-generation refugees. The term ‘Pontic Greek’ (in Greek: ) was originally an etic term, while Pontians called their language by...
Article
Background: Screening people’s cognitive skills have been proven essential for reference to full assessment. These methods include short scales, such as the Abbreviated Mental Test Score (AMTS). The AMTS is a valid 10-item questionnaire that has been translated into many languages, but not in Greek yet. The aim of this study is the validation of th...
Article
ABSTRACT Background: Screening people’s cognitive skills have been proven essential for reference to full assessment. These methods include short scales, such as the Abbreviated Mental Test Score (AMTS). The AMTS is a valid 10-item questionnaire that has been translated into many languages, but not in Greek yet. The aim of this study is the validat...
Conference Paper
Background: Given “the bilingual advantage”, both in terms of cognitive and linguistic development, which has been extensively discussed in the relevant literature, recent research has set out to examine the possibility that bilingualism can function in a compensatory way for students with learning difficulties or in even for students in the autism...
Article
Objective. The inclusion of subjective methods for evaluating Voice Disorders is proven an essential factor for diagnosis as these methods include self-reported questionnaires (eg, Voice Handicap Index-VHI) for everyday clinical practice. In turn, by obtaining cut-off scores of self-perceived questionnaires intended for assessment procedures of dif...
Article
Background/aims: The number of different words (NDW), an essential measure of lexical diversity, is extremely valuable towards providing data regarding children's language development. However, in Cyprus, practitioners are deprived of the opportunity to utilize NDW, as no normative data exist for toddlers who speak Cypriot Greek (CYG). Methods:...
Article
Objective(s) The use of subjective evaluation tools are proven useful and of high clinical value in the case of voice disordered population. For that type of evaluation, self-assessment questionnaires about the severity of the voice like Voice Handicap Index-30 (VHI-30) have been developed. The VHI-30 is the most studied tool which includes psycho...
Conference Paper
Full-text available
Bilingualism is perceived as being a multifactorial and multidimensional domain, which raises the interest of many different disciplines, including the scientific field of speech and language therapy. Speech and language therapy give a great emphasis and focus on the relevance of the form, content and use of speech by the bilingual person, as well...
Article
Background: Voice disorders influence the quality of people's life. When the type of disorder is determined then the clinicians are capable of finding their patients' needs and address their complaints concerning their vocal problems. One of the most used tools, for assessing the patients' quality of life (in accordance with their vocal status), i...
Article
Full-text available
Voice disorders often remain undiagnosed. Many self-perceived questionnaires exist for various medical conditions. Here, we used the Greek Voice Handicap Index (VHI) to address the aforementioned problem. Everyone can fill in the VHI questionnaire and rate their symptoms easily. The innovative feature of this research is the global cut-off score ca...
Article
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Data security plays a crucial role in healthcare monitoring systems, since critical patient information is transacted over the Internet, especially through wireless devices, wireless routes such as optical wireless channels, or optical transport networks related to optical fibers. Many hospitals are acquiring their own metro dark fiber networks for...
Article
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Several studies have shown that smoking is the primary candidate for provoking voice disorders in adults. This unwanted condition has unfortunately other additional unwanted effects. One strong effect which is the result of this study, is relevant to psychological affected aspect of subjects which smoked [1–4]. For the purpose of conducting this re...
Article
Full-text available
Various therapies of voice disorders exist such as the kind of invasive treatments. On the contrary, a significant non-invasional method, demanding only the physical exercise of the subject, is Tango Voice Treatment Method [1]. Its beneficial results constitute this voice therapy as a standalone procedure even without hydration (not a strong factor...
Article
Full-text available
In recent years, the usefulness of Green Technology along with the implementation of advanced wireless technologies led scientists towards investigating the effects of this advanced Green Technology to Human Resources. A large number of surveys have investigated the impact, of working conditions inside conventional buildings, on health, productivit...
Article
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The new era of the continuous deployment of wireless and sensory technology in conjunction to the rapid expansion of Green Buildings’ has led to a point of developing and enforcing specific rules and conditions. These conditions depend on the proper matching of Peoples’ temperament and Green Smart Buildings. In parallel, the rules are relevant to t...
Article
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The promotion of green growth has been a strategy for developed countries by improving the energy performance of residences. This tendency will help towards overcoming the continuously increasing greenhouse effect because the contribution of typical residences to the production of air pollutants is extremely high. Housing conditions (indoor air qua...
Article
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Green residences are known for their innovative character towards living conditions and low energy emissions. Their reduced ecological footprints design is not only limited to aforementioned but also include the construction of better environmental spaces and conditions even through transforming conventional buildings. Moreover, the psychological f...
Article
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Throughout the history of e-learning, the people with disabilities had to face a lot of omissions relevant to every aspect of their learning procedure [1]. These problems ranged from improper web designed pages to the improper way of confronting these types of our fellow citizens. This research takes into consideration the need for radical changes...
Article
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In the modern era of vast communication and information dissemination the need for radical security measures must be addressed. Specifically, as the Internet has a tremendous influence on people and especially on younger ones, new threats are added to existing ones such as the Blue Whale phenomenon [1]. The latter is continuously growing with the c...
Article
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Reading abilities in women seem to alter as age progresses and as cultural framework changes. Estrogen related changes also appear to contribute in reading abilities. Moreover, research shows that analphabetism affects women more than men which results in literacy difficulties. However, it is important to determine how different ages perceive their...
Article
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Robots as well-known are complex machines constituted of artificial parts and digital logic structures. Two key points need special attention in order an artificial humanoid to be finely developed. Firstly, the artificial structure must resemble to a human not only in the figure but moreover in expressed movements accomplishing a body language very...
Article
Full-text available
Many problems arise for adults with literacy difficulties in the daily demanding environment. Those problems are probably the outcome of undetected and untreated literacy symptoms (as reading disabilities) at childhood. Recent findings suggest that such difficulties are more common amongst men than women. Considering the above, the purpose of this...
Article
Full-text available
Coordination of speech musculature is strongly associated with neurological disorders also resulting from natural aging. Whichever is the cause, an important part of the assessment is the use of self-reported tools [1–8] to determine the patient’s needs and requests. One is the Adult Developmental Co-ordination Disorders/Dyspraxia Checklist (ADC)....
Article
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The motor that demands of speech production can be compromised by normal aging processes and thus it could change an individual’s precision and fluency. It is important to have individualized data on the motor difficulties which any person might face throughout his/her life to make the clinical process more efficient and client-oriented. To this di...
Article
Full-text available
Cluttering is a fluency disorder characterized by an abnormally rapid rate. Several studies about its diagnosis were conducted based on different processes, such as articulation’s and phonological assessments and/or collection of spontaneous speech samples. Standardized diagnostic tools had not been proposed till Davis et al. suggested the “Predict...
Article
Full-text available
Fluency disorders affects 1% of the population and over 3 million people in the United States. Cluttering is a disorder characterized by a rapid rate of speech that may appear as non-proper erratic pronunciation. Many guidelines were suggested for the evaluation of cluttering to the literature and one diagnostic procedure is the use of self-perceiv...
Article
Full-text available
Fluency disorders and its etiologies was always of interest by mental health professionals. Cluttering -as a fluency disorder- is a clinical condition that needs to be diagnosed accurately and extensively. Self-perceived questionnaires are a new trend in evidence-based assessment, and gender is a factor that influences their results. Particularly,...
Article
Full-text available
Anticipation of stuttering and its symptoms is a frequent but inadequately measured phenomenon of high importance in clinical evidence based practice. It is common in assessment procedure of stuttering—especially in kids—to use self-perceived questionnaires as in other disorders [1–9]. In the literature only one questionnaire is referred to adults’...
Article
Full-text available
The collection and analysis of a language sample is of particular research and clinical interest due to its high validity [1–5]. The most widely used language indicator is the Mean Length of Utterance (MLU). MLU is usually counted in words (MLU-w) or morphemes (MLU-m). A brief review of the literature revealed a lack of research evidence which is w...
Article
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The factual study examines the use of language in a social context. The purpose of the research was to examine the use of language in 4-year-old children of typical language development, speaking the Cypriot dialect.
Article
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Language is a way of expression which is inherent in all people. Each person is born with the ability to develop language irrespective of nationality or language. However, some children may have language disorder or they may not have typical language development [1–4]. In order to diagnose a language disorder, clinicians use formal or informal asse...
Article
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The current research studied in depth the actual views of the parents of Greek Cypriot children with autistic spectrum disorder regarding the communication skills of their children at pre-school and primary school age.
Article
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Quite a few questionnaires have been created for the detection of autistic characteristics of average population. One of them is the Autism Spectrum Screening Questionnaire (ASSQ) [1]. It is consisted of 27 questions which detect impairments in socialization, communication and unfamiliar behaviors. ASSQ has been satisfactorily validated and used in...
Article
Full-text available
Individuals, in the spectrum of autism, present difficulties in “empathising” and show higher results in “systemising” [1]. In general, women empathise more than men and in turn males systemise more than females [1–7]. Autism-Spectrum Quotient (AQ) is a 50-item self-administered questionnaire which was created to measure the level of autistic trait...
Article
Voice performance is an inextricable key factor of everyday life. Obviously, the deterioration of voice quality can cause various problems to human communication and can therefore reduce the performance of social skills (relevant to voice). The deterioration could be originated from changes inside the system of the vocal tract and larynx. Various p...
Conference Paper
Full-text available
Sometimes the perception and ability such as eating and swallowing, may affect the differential diagnosis of mental illnesses. Thus, the existence of an easy and reliable self-perceived tool in Greek language is essential so that professionals can gather more info as that will facilitate the clinical process and possibly prevent future complication...
Conference Paper
Full-text available
Therapeutic programs for swallowing disorders are directly depended to a valid assessment by using objective and subjective methods. The subjective methods include the administration of self-assessment questionnaires so the self-perception of deglutition to be categorized. Moreover, self-assessment questionnaires can be quite beneficial if we take...
Conference Paper
Full-text available
Assessment is important for the therapeutic decisions relevant to swallowing disorders. Moreover, it is proper to detect symptoms in early stages via self-perceived questionnaires of swallowing abilities. All the above, underline the urgent need of constructing more validated self-assessment questionnaires being fully customizable in accordance to...
Conference Paper
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The correlation of clinical outcomes with reliable research evidence data is of great importance. This necessity is a fact for the Greek clinical practice and its data could help professionals. The use of self-perceived evidence data is a new trend [1-2]. The use of those type of questionnaires such as of Swallowing Disturbance Questionnaire (SDQ)...
Conference Paper
Full-text available
Benefits like noninvasiveness, briefness and non-exposure to danger make the self assessment questionnaires ideal for both speech language pathologists and other clinicians. Their ability to provide evidence of symptoms in early stages or information for the perception of the individuals about their swallowing procedure makes them a useful tool. Th...
Conference Paper
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It has always been a challenge for clinicians concluding to an assessment that is both valid and accomplishable. The importance of an evident assessment is a necessity if we take into consideration that it determines the clinician’s diagnostic and therapeutic decisions. An essential part of the assessment is an individual’s self-perception of his/h...
Conference Paper
Full-text available
Symptoms of feeding and swallowing in patients that have undergone laryngectomy are quite common. Thus, there is an enormous need for ongoing evident based diagnostic procedures, even in Greek language that will help health professionals to diagnose patients with such disorders [1-3]. This pilot study is focused on the evaluation of a patient-repor...
Conference Paper
Full-text available
Dysphagia has a wide range of mental, medical and speech language pathology implications. Not only it affects swallowing and changes the diet habits but it also alters the quality of life. This is a quite common phenomenon in the elderly which suffer from multiple sclerosis (MS) and thus they may face social isolation and depression. Self-perceived...
Conference Paper
Full-text available
Gender differences in cognitive functions of healthy older adults have been studied widely in the past decades. Findings have shown that men, on average, outperform women at visuospatial tasks, whereas women have an advantage on verbal skills and episodic memory. Hence, the researchers focus on gender differences on the Mini-Mental State Examinatio...
Conference Paper
Full-text available
Parkinson’s disease dementia (PDD), a neurodegenerative motor disorder associated with cognitive decline, affects millions of individuals and can potentially have adverse effects on their families. With these numbers growing by the day, researchers have started to examine the role of gender on PDD, as it can potentially contribute to the early prog...
Conference Paper
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Alzheimer’s disease (AD) is defined as a progressive neurodegenerative disease with the most prominent symptom being the deterioration of cognitive function. Similarly, Parkinson’s disease dementia (PDD) might demonstrate identical patterns of cognitive impairment, resulting in the misdiagnosis of these patients leading to a subsequently rise of th...
Conference Paper
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Attention Deficit & Hyperactivity Disorder (ADHD) is a mental disorder associated with inability to concentrate and perform certain execution functions. Its evaluation can be based in interdisciplinary methods by using multimodal analysis. Self-perceived questionnaires are one of the evaluation methods which are gaining more evidence based data eve...
Conference Paper
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In literature, a number of self-perceived questionnaires were developed about different mental, medical and developmental disorders giving good evidence data about the self-awareness of a someone apprehending his/her current condition. Same for reading abilities studies, self-reported questionnaires were developed such as Adults Reading Questionnai...