However, academic problems don't necessarily mean a person with dyslexia will be unable to succeed.
However, some educational experts question how helpful it is to define dyslexia in such broad terms.
Other people with dyslexia find that they thrive only outside the world of reading and writing.
Many adults with dyslexia say life does get easier, even if their reading skills don't.
Those with dyslexia can experience mild or more severe difficulties, according to dyslexia organisations.
Nonetheless, only one other treatment for dyslexia has come close to showing comparable improvements.
Four key findings suggest that dyslexia is an organic problem rather than a motivational one.
Thanks to my memoir about my dyslexia, I'm now traveling a whole lot more.
Much of the research concerns learning deficits, such as dyslexia and its numerical analogue, dyscalculia.
And it says there should be clearer guidance for parents about what help is available for dyslexia.
So, "The Bush Dyslexicon" refers to a kind of corporate or collective dyslexia by the US media.
But many schools don't, according to a federal report commissioned last year by the Congressional Dyslexia Caucus.
This week, members of the British Dyslexia Association are campaigning for greater awareness of the issues involved.
That is significant because dyslexia is essentially an inability to deal with linguistic information in visual form.
The inability to distinguish between sounds in quick succession is a symptom of dyslexia in people, too.
Until recently, cognitive psychologists thought that dyslexia was a specific disability that affected only reading and writing.
Many people with dyslexia are creative and bright, and may be gifted in mathematics, science or the arts.
Truly gifted pupils may try to play down their differences or have them concealed by dyslexia, it adds.
BBC: NEWS | UK | Education | What is there for bright children?
The one big challenge in my life my dyslexia has helped me acquire every skill that has made me successful.
FORBES: From Dyslexic Artist To CEO: How To Turn Barriers Into Benefits
Young children who are poor at mentally dividing spoken words into phonemes almost always develop dyslexia later on.
All this suggests that a problem with hearing or processing speech could be the underlying cause of dyslexia.
There's no known way to correct the underlying brain abnormality that causes dyslexia.
These arguments are supported by the fact that dyslexia is associated with more problems than just a hearing deficit.
Back in Cambridge, Ms Goswami talks about her lab's recent research on dyslexia.
Since 2003, he has published more than a dozen books about a fictional 10-year-old boy with dyslexia named Hank Zipzer.
Professor Julian Elliott, head of education at Durham University, questioned how dyslexia differed from children who simply found reading difficult.
The proliferation of smartphones, video chats and other technologies may also make the future easier for people with dyslexia, he adds.
He overcame childhood dyslexia, graduated from Wesleyan University, went into the family business and began investing in real estate in southern Vermont.
Sir Jim says dyslexia should not be treated as a distinct category of people, but as a continuum, much like other disorders.
While he struggled mightily with dyslexia, Boies won a scholarship to the University of Redlands in California, where he majored in history.
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