aphasia {Ans: impairment of language, usually caused by left hemisphere damage either to Broca's area (impairing speaking) or to Wernicke's area (impairing understanding).}Selective Mutism (SM) {Ans: rare childhood disorder characterized by a lack of speech in one or more settings in which speaking is socially expected}Autism {Ans: a disorder that appears in childhood and is marked by deficient communication, social interaction, and understanding of others' states of mind}Stuttering {Ans: a speech disorder that disrupts the flow of words with repeated or prolonged sounds and involuntary pauses}alalia {Ans: loss of the ability to speak}Apraxia of Speech (AOS) {Ans: impaired planning or programming of sensorimotor commands for normal speech. Inconsistent errors, groping behaviors, stereotypic behaviors (severe), trial and error}Dysarthria {Ans: the inability to use speech that is distinct and connected because of a loss of muscle control after damage to the peripheral or central nervous system}lisping {Ans: Articulation disorder when chldren or adults produce the sound /s/, /sh/, /z/, and /ch/ with their tounge between the upper and lower teeth}Spasmodic Dysphonia (SD) {Ans: A relatively rare voice disorder that may have either or both neurological and psychological etiologies; characterized by a strained, strangled,