Stuttering, also known as stammering, is a speech disorder in which the flow of speech is disrupted by involuntary repetitions and prolongations of sounds, syllables, words, or phrases as well as involuntary silent pauses or blocks in which the person who stutters is unable to produce sounds. The term stuttering is most commonly associated with involuntary sound repetition, but it also encompasses the abnormal hesitation or pausing before speech, referred to by people who stutter as blocks, and the prolongation of certain sounds, usually vowels or semivowels. According to Watkins et al., stuttering is a disorder of "selection, initiation, and execution of motor sequences necessary for fluent speech production". For many people who stutter, repetition is the main concern. The term "stuttering" covers a wide range of severity, from barely perceptible impediments that are largely cosmetic to severe symptoms that effectively prevent oral communication. Almost 70 million people worldwide stutter, about 1% of the world's population.
A communication disorder is any disorder that affects an individual's ability to comprehend, detect, or apply language and speech to engage in dialogue effectively with others. The delays and disorders can range from simple sound substitution to the inability to understand or use one's native language.
Speech disorders or speech impairments are a type of communication disorder in which normal speech is disrupted. This can mean fluency disorders like stuttering, cluttering or lisps. Someone who is unable to speak due to a speech disorder is considered mute. Speech skills are vital to social relationships and learning, and delays or disorders that relate to developing these skills can impact individuals function. For many children and adolescents, this can present as issues with academics. Speech disorders affect roughly 11.5% of the US population, and 5% of the primary school population. Speech is a complex process that requires precise timing, nerve and muscle control, and as a result is susceptible to impairments. A person who has a stroke, an accident or birth defect may have speech and language problems.
Specific language impairment (SLI) is diagnosed when a child's language does not develop normally and the difficulties cannot be accounted for by generally slow development, physical abnormality of the speech apparatus, autism spectrum disorder, apraxia, acquired brain damage or hearing loss. Twin studies have shown that it is under genetic influence. Although language impairment can result from a single-gene mutation, this is unusual. More commonly SLI results from the combined influence of multiple genetic variants, each of which is found in the general population, as well as environmental influences.
Telerehabilitation (or e-rehabilitation is the delivery of rehabilitation services over telecommunication networks and the internet. Telerehabilitation allows patients to interact with providers remotely and can be used both to assess patients and to deliver therapy. Fields of medicine that utilize telerehabilitation include: physical therapy, occupational therapy, speech-language pathology, audiology, and psychology. Therapy sessions can be individual or community-based. Types of therapy available include motor training exercises, speech therapy, virtual reality, robotic therapy, goal setting, and group exercise.
Speech-language pathology is a healthcare field of expertise practiced globally. Speech-language pathology (SLP) specializes in the evaluation, diagnosis, treatment, and prevention of communication disorders, cognitive-communication disorders, voice disorders, and swallowing disorder across the lifespan. It is an independent profession that is sometimes considered a "related health profession" or allied health profession by professional bodies like the American Speech-Language-Hearing Association (ASHA) and Speech Pathology Australia. Allied health professions include audiology, optometry, occupational therapy, rehabilitation psychology, physical therapy and others.
Auditory processing disorder (APD), rarely known as King-Kopetzky syndrome or auditory disability with normal hearing (ADN), is a neurodevelopmental disorder affecting the way the brain processes sounds. Individuals with APD usually have normal structure and function of the outer, middle, and inner ear. However, they cannot process the information they hear in the same way as others do, which leads to difficulties in recognizing and interpreting sounds, especially the sounds composing speech. It is thought that these difficulties arise from dysfunction in the central nervous system. It is highly prevalent in individuals with other neurodevelopmental disorders, such as attention deficit hyperactivity disorder, autism spectrum disorders, dyslexia, and sensory processing disorder.
Electronic fluency devices are electronic devices intended to improve the fluency of persons who stutter. Most electronic fluency devices change the sound of the user's voice in his or her ear.
Stuttering therapy is any of the various treatment methods that attempt to reduce stuttering to some degree in an individual. Stuttering can be a challenge to treat because there is a lack of evidence-based consensus about therapy. Some believe that there is no cure for the condition.
Speech shadowing is a psycholinguistic experimental technique in which subjects repeat speech at a delay to the onset of hearing the phrase. The time between hearing the speech and responding, is how long the brain takes to process and produce speech. The task instructs participants to shadow speech, which generates intent to reproduce the phrase while motor regions in the brain unconsciously process the syntax and semantics of the words spoken. Words repeated during the shadowing task would also imitate the parlance of the shadowed speech.
The Royal College of Speech and Language Therapists is the professional body for speech and language therapists in the UK and a registered charity. It was established on 6 January 1945 to promote the study of speech therapy in the UK, to seek improvement and maintain a high standard of knowledge and to unite all members of the profession. The RCSLT’s current patron is the Duchess of Edinburgh. The RCSLT has offices in Edinburgh, Belfast, Cardiff and London.
Dorothy Vera Margaret Bishop is a British psychologist specialising in developmental disorders specifically, developmental language impairments. She is Professor of Developmental Neuropsychology and Wellcome Trust Principal Research Fellow in the Department of Experimental Psychology at the University of Oxford, where she has been since 1998. Bishop is Principal Investigator for the Oxford Study of Children's Communication Impairments (OSCCI). She is a supernumary fellow of St John's College, Oxford.
Communication deviance (CD) occurs when a speaker fails to effectively communicate and convey meaning to their listeners with confusing speech patterns or illogical patterns. These disturbances can range from vague linguistic references, contradictory statements to more encompassing non-verbal problems at the level of turn-taking.
Developmental language disorder (DLD) is identified when a child has problems with language development that continue into school age and beyond. The language problems have a significant impact on everyday social interactions or educational progress, and occur in the absence of autism spectrum disorder, intellectual disability or a known biomedical condition. The most obvious problems are difficulties in using words and sentences to express meanings, but for many children, understanding of language is also a challenge. This may not be evident unless the child is given a formal assessment.
Ultrasound tongue imaging (UTI) has been used for speech production and linguistics research since it came into regular clinical use in the 1960s and 1970s. It is a non-invasive technique allowing researchers to view the shape, position and movements of the tongue (from root to apex) in real time during speech.
Nonverbal autism is a subset of autism where the person does not learn how to speak. It is estimated that 25% to 50% of children diagnosed with autism spectrum disorder (ASD) never develop spoken language beyond a few words or utterances.
Pamela Mary Enderby, FRCSLT is a British Speech Therapist and Professor of Community Rehabilitation at the University of Sheffield.
Nicola Botting is a language and communication scientist whose work focuses on language and psychological outcomes of children with low birth weight, autism spectrum disorder, developmental language disorder, and other developmental disabilities. She is Professor of Developmental Disorders, Language & Communication Science at the City University of London. Botting is editor-in-chief of the journal Autism & Developmental Language Impairments.
Social (pragmatic) communication disorder (SPCD) - previously called semantic-pragmatic disorder (SPD) or pragmatic language impairment (PLI) - is a disorder in understanding pragmatic aspects of language. People with SPCD have special challenges with the semantic aspect of language and the pragmatics of language. Individuals have difficulties with verbal and nonverbal social communication.
Roganie Govender is a British-South African speech and language therapist. She is a consultant clinical academic speech and language therapist at University College London Hospitals NHS Foundation Trust.
