Speech-Language Pathology professionals (Speech-Language Pathologists (SLPs), or informally speech therapists) specialize in communication disorders.
The main components of speech production include: phonation, the process of sound production; resonance opening and closing of the vocal folds; intonation the variation of pitch; and voice, including aeromechanical components of respiration. The main components of language include: phonology, the manipulation of sound according to the rules of the language; morphology, the understanding and use of the minimal units of meaning; syntax, the grammar or principles and rules for constructing sentences in language; semantics the interpretation of meaning from the signs or symbols of communication; and pragmatics, the social aspects of communication.
Speech-Language Pathologists provide a wide range of services, mainly on an individual basis, but also as support for individuals, families, support groups, and providing information for the general public. Speech services begin with initial screening for communication and swallowing disorders and continue with assessment and diagnosis, consultation for the provision of advice regarding management, intervention and treatment, and provision counseling and other follow up services for these disorders.
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cognitive aspects of communication (e.g., attention, memory, problem solving, executive functions).
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speech;
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language including comprehension and expression in oral, written, graphic, and manual modalities; preliteracy and language-based literacy skills, phonological awareness.
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swallowing or other upper aerodigestive functions such as infant feeding and aeromechanical events (evaluation of esophageal function is for the purpose of referral to medical professionals);
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sensory awareness related to communication, swallowing, or other upper aerodigestive functions.

