Thread by @TheDLDProject_, DOES DLD REALLY AFFECT 1 IN 14 PEOPLE? When discussing Developmental Language [...]

https://abs.twimg.com/emoji/v2/... draggable="false" alt="📣" title="Anfeuerungsmegafon" aria-label="Emoji: Anfeuerungsmegafon"> DOES DLD REALLY AFFECT 1 IN 14 PEOPLE?

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When discussing Developmental Language Disorder (DLD) people are often struck by the high prevalence. It almost seems unbelievable!

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#DevLangDis #1in14 #DLDSeeMe

DOES DLD REALLY AFFECT 1 IN 14 PEOPLE? https://abs.twimg.com/emoji/v2/... draggable="false" alt="🤔" title="Denkendes Gesicht" aria-label="Emoji: Denkendes Gesicht">When discussing Developmental Language Disorder (DLD) people are often struck by the high prevalence. It almost seems unbelievable!1/9 #DevLangDis #1in14 #DLDSeeMe" title="https://abs.twimg.com/emoji/v2/... draggable="false" alt="📣" title="Anfeuerungsmegafon" aria-label="Emoji: Anfeuerungsmegafon"> DOES DLD REALLY AFFECT 1 IN 14 PEOPLE? https://abs.twimg.com/emoji/v2/... draggable="false" alt="🤔" title="Denkendes Gesicht" aria-label="Emoji: Denkendes Gesicht">When discussing Developmental Language Disorder (DLD) people are often struck by the high prevalence. It almost seems unbelievable!1/9 #DevLangDis #1in14 #DLDSeeMe" class="img-responsive" style="max-width:100%;"/>

Here are some of the usual responses:

https://abs.twimg.com/emoji/v2/... draggable="false" alt="➡️" title="Pfeil nach rechts" aria-label="Emoji: Pfeil nach rechts"> "Really?! 1 in 14 people. That seems like a lot."

https://abs.twimg.com/emoji/v2/... draggable="false" alt="➡️" title="Pfeil nach rechts" aria-label="Emoji: Pfeil nach rechts"> "If there are 2 kids with DLD in the average classroom of 30, how come I haven& #39;t heard of it?"

So how do we know DLD affects 1 in 14 people?

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To start with we rely on epidemiology (prevalence) studies, but these are often expensive, time-consuming, and have some limitations. This means we don& #39;t have a lot of them.

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https://abs.twimg.com/emoji/v2/... draggable="false" alt="✅" title="Fettes weißes Häkchen" aria-label="Emoji: Fettes weißes Häkchen"> One study by Bruce Tomblin and team in 1997 screened 7218 children in the US and found approximate 7.4% had DLD (formerly SLI). Approximately 8% of boys and 6% of girls were affected.

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https://abs.twimg.com/emoji/v2/... draggable="false" alt="✅" title="Fettes weißes Häkchen" aria-label="Emoji: Fettes weißes Häkchen"> In 2016, @lilacCourt and her team in the UK assessed 7267 children. They found 7.58% had DLD and 2.34% had a Language Disorder associated with a condition (such as Autism or Intellectual Disability).

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https://abs.twimg.com/emoji/v2/... draggable="false" alt="💜" title="Violettes Herz" aria-label="Emoji: Violettes Herz">

https://abs.twimg.com/emoji/v2/... draggable="false" alt="💛" title="Gelbes Herz" aria-label="Emoji: Gelbes Herz"> With some quick maths, we have a pretty good idea that DLD will impact around 7.5% | 1 in 14 people | 2 in the average classroom of children, however, both of these studies only looked at children from 4 to 6 years of age.

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Here we need to look at research that has taken place over a period of time (longitudinal).

https://abs.twimg.com/emoji/v2/... draggable="false" alt="✅" title="Fettes weißes Häkchen" aria-label="Emoji: Fettes weißes Häkchen"> Bruce Tomblin followed 196 children from his earlier research for 4 years and found DLD will persist into primary school.

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https://abs.twimg.com/emoji/v2/... draggable="false" alt="✅" title="Fettes weißes Häkchen" aria-label="Emoji: Fettes weißes Häkchen"> The Manchester Language Study has been tracking the progress of participants with DLD in the UK since the 1990& #39;s. Through multiple research papers, the research team has clearly demonstrated that DLD is a lifelong condition, but impacts people in different ways.

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https://abs.twimg.com/emoji/v2/... draggable="false" alt="💜" title="Violettes Herz" aria-label="Emoji: Violettes Herz">

https://abs.twimg.com/emoji/v2/... draggable="false" alt="💛" title="Gelbes Herz" aria-label="Emoji: Gelbes Herz"> With the knowledge of "how many" have DLD and the lifelong impact documented in these (and many other) studies, we can say with growing confidence that 1 in 14 people have DLD.

#DevLangDis #1in14 #DLDSeeMe

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