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Developmental verbal dyspraxia (DVD), also known as childhood apraxia of speech (CAS) and developmental apraxia of speech (DAS), [1] is a condition in which an individual has problems saying sounds, syllables and words. This is not because of muscle weakness or paralysis.
Developmental verbal dyspraxia (DVD), also known as childhood apraxia of speech (CAS) and developmental apraxia of speech (DAS), [3] [4] is an inability to utilize motor planning to perform movements necessary for speech during a child's language learning process. Although the causes differ between AOS and DVD, the main characteristics and ...
Developmental coordination disorder (DCD), also known as developmental motor coordination disorder, developmental dyspraxia, or simply dyspraxia (from Ancient Greek praxis 'activity'), is a neurodevelopmental disorder [1] characterized by impaired coordination of physical movements as a result of brain messages not being accurately transmitted to the body.
Individuals with developmental verbal apraxia encounter difficulty saying sounds, syllables, and words. The difficulties are not due to weakness of muscles, but rather on coordination between the brain and the specific parts of the body. [2] [3] Apraxia of speech is the acquired form of this disorder caused by brain injury, stroke or dementia.
AOS can independently occur without issues in areas such as verbal comprehension, reading comprehension, writing, articulation, or prosody. [6] Buccofacial or orofacial apraxia, the most common type of apraxia, is the inability to carry out facial movements on demand. For example, an inability to lick one's lips, wink, or whistle when requested ...
For example, prosody is responsible for verbal variations in interrogative versus declarative statements and serious versus sarcastic remarks. Linguistic dysprosody refers to the diminished ability to verbally convey aspects of sentence structure, such as placing stress on certain words for emphasis or using patterns of intonation to reveal the ...
Developmental delay – when a child fails to develop (whether that be mentally or physically) at the normal rate for children at the same age. Autism – a term that includes neurological disorders that inhibit social functioning, communication, sensory processing, and other challenges.
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 ...