Stuttering (alalia syllabaris ), also known as stammering (alalia literalis or anarthria literalis ), is a speech disorder in which the flow of speech is disrupted by involuntary repetitions and prolongations of sounds, syllables, words or phrases, and involuntary silent pauses or blocks during which the person who stutters is unable to produce sounds.[ 1] The exact etiology of stuttering is unknown; both genetics and neurophysiology are thought to contribute.[ 2] There are many treatments and speech-language pathology techniques available that may help increase fluency in some people who stutter to the point where an untrained ear cannot perceive stuttering; however, there is essentially no cure for the disorder at present.[ 3] [ 4]
Greek orator Demosthenes practicing oratory at the beach with pebbles in his mouth
People who stutter include British Prime Minister Winston Churchill , orator Demosthenes , King George VI , actor James Earl Jones , US President Joe Biden , and country singer Mel Tillis . Churchill, whose stutter was particularly apparent to 1920s writers,[ 5] was one of the 30% of people who stutter who have an associated speech disorder—a lisp in his case—and led his nation through World War II .[ 6] [ 7] Demosthenes stammered and was inarticulate as a youth, and, through dedicated practice using methods such as placing pebbles in his mouth, became a great orator of Ancient Greece.[ 8] King George VI hired speech therapist Lionel Logue to enable him to speak more easily to his Empire, and Logue effectively helped him accomplish this goal.[ 9] This training and its results are the focus of the 2010 film The King's Speech .[ 10] James Earl Jones has stated he was mute for many years of his youth, and he became an actor noted for the power of his voice.[ 11] [ 12] Mel Tillis stutters when talking but not when singing.[ 13] Many people had their speech impairment only during childhood.[ 14]
Actor James Earl Jones in 2013
Emily Blunt in 2014 German silent film actor Bruno Kastner circa 1920 Actress Marilyn Monroe in 1953's Gentlemen Prefer Blondes
Basketball player Wilt Chamberlain in 1959 while a Harlem Globetrotter Golfer Sophie Gustafson in 2008
Prime Minister Winston Churchill in 1942
President Joe Biden in 2021
Blues guitarist John Lee Hooker
Country singer Mel Tillis in 2007 at the Grand Ole Opry
Writer W. Somerset Maugham in 1934 Writer Machado de Assis circa 1896 Sonia Sanchez in 1998
Charles Darwin King George VI of the United Kingdom circa 1940–1946 Zoologist Alan Rabinowitz Mathematician Niccolò Tartaglia later in life
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