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Down syndrome or Down's syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. [3] It is usually associated with developmental delays, mild to moderate intellectual disability, and characteristic physical features. [1] [12] There are three types of Down syndrome, the ...
The term idiot savant (French for "learned idiot") was first used to describe the condition in 1887 by John Langdon Down, who is known for his description of Down syndrome. Down described approximately ten cases of youth he had known with unusual mental powers, like "verbal adhesion" (eg. memorizing books read once), photographic memory for ...
John Langdon Down. John Langdon Haydon Down (18 November 1828 – 7 October 1896) was a British physician best known for his description of the genetic condition now known as Down syndrome, which he originally classified in 1862. He is also noted for his work in social medicine and as a pioneer in the care of mentally disabled patients.
The average IQ of a young adult with Down syndrome is 50, equivalent to the mental age of an 8- or 9-year-old child, but this number varies widely. At the same time, they enjoy a rich social and emotional awareness. Down syndrome is the most common chromosome abnormality in humans, occurring in about one per 1000 babies born each year.
An estimated 0.2%–0.5% of children have ME/CFS, and more adolescents are affected by the illness than younger children.: 182 The incidence rate according to age has two peaks, one at 10–19 and another at 30–39 years, and the prevalence is highest between ages 40 and 60. History
In February 2022, Jirau became the first-ever model with Down Syndrome to be hired by the American retail company Victoria's Secret. According to a press release, she, alongside 17 other women, promotes Victoria's Secret's new all-day comfort Love Cloud line, which the brand believes would "reinforce(e) Victoria's Secret's commitment to ...
As of 2018, overall prevalence is estimated to range from 0.8% to 6.2%. In 2008 under the DSM-IV, lifetime prevalence of NPD was estimated to be 6.2%, with 7.7% for men and 4.8% for women, with a 2015 study confirming the gender difference. In clinical settings, prevalence estimates range from 1% to 15%.
Pollyanna principle. The Pollyanna principle (also called Pollyannaism or positivity bias) is the tendency for people to remember pleasant items more accurately than unpleasant ones. [1] Research indicates that at the subconscious level, the mind tends to focus on the optimistic; while at the conscious level, it tends to focus on the negative.