Dyslexia: An English Language Problem?

Posted by Tracy Friday, December 4th, 2009

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There is often a greater number of dyslexics in English-speaking countries compared to countries like China, Japan, and even Spain and Italy. Why do we see this difference across countries?

The answer can be found by looking at one cause of dyslexia: a difficulty in processing and remembering the sounds of phonemes. English is a particularly complex language and one that has been described as ‘orthographically nontransparent’. This means that the phonemes do not always have the same sounds. Languages like English that are not ‘transparent’ give rise to greater difficulties in reading.

In contrast, other language such as Spanish and Italian are orthographically transparent and it is easy to match the letter with the correct sound. Languages, such as Chinese or Japanese (Kanji), that use characters require greater use of visual memory, rather than verbal memory skills.

Brain imaging studies have found dyslexics in different languages (English, French and Italian) all showed the same brain deficits involving difficulty in processing verbal information.

Some might suggest that the differences in the education system across countries lead to higher rates of dyslexia in some countries. However, studies that have looked at bilingual children have found that they can struggle in reading in one language (usually English), yet be excellent readers in another language (such as Chinese or Spanish).

4 Responses so far

I agree that the level of difficulty of English is higher resulting in a higher diagnosed rate of dyslexia in English speaking countries.I am much less comfortable in concluding that “a difficulty in processing and remembering the sounds of phonemes” is the only dyslexia factor of importance therefore dyslexia is an English language problem.

As you say ,”Brain imaging studies have found dyslexics in different languages (English, French and Italian) all showed the same brain deficits involving difficulty in processing verbal information.” where English is not a factor and the implication that dyslexia is not only an English language problem.

Dyslexia is about having problems processing the visual notion of speech, or using the writing system developed or adopted by your culture.

There are many cognitive causes of dyslexia and which specific underlying cognitive issue may cause your dyslexic will depend of the orthography of structure of the writing system you are using.

I believe that the difference in numbers is simply because not all the children in a particular school were formally tested; weak ones were only identified by teachers when a learning problem is obvious. It might be more obvious with English because the letters don’t always have the same sounds. A child having problems in another language might not have such an OBVIOUS problem, and is thus not identified.

I know a Chinese child whose family speaks nothing but Chinese at home, and yet he could not pick up Chinese and prefers English, to the point that his family had to learn English to speak with him! He is unable to discern similar-sounding tones, thus Chinese is confusing to him. (Different tone = different meaning.) He sometimes pronounces English words with the wrong tones as well, but at least he can make himself understood.

Thanks for your comments. John, dyslexia is certainly not exclusively an English-language problem however, as you rightly point out, there is a much greater incidence in English speakers (and other speakers of non-orthographically transparent languages). PS, the issue of WHY there is a discrepancy in prevalence rates is of course interesting. Diagnoses/early screening is certainly a possibility, yet dyslexia by definition relates to reading difficulties. Thus if a student is not manifesting these difficulties, there would be little reason to assess them. Dolfrog, there are many theories for WHAT causes dyslexia, not all of them backed by scientific evidence. However, there is consistent evidence that verbal (or ‘auditory’ working memory plays a significant role in both reading and reading difficulties/dyslexia.

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