Dyslexia is a broad term describing a number of learning
disabilities. In general, it’s a reading deficiency. Children who are dyslexic
tend to have more difficulty learning to read and spend much less time reading
than their peers. This, of course, only increases the differences in reading
ability between them and their agemates. Though there is no agreed upon cause,
let alone cure, Marco Zorzi of the University of Padova and his colleagues have
hit upon one possible treatment: wider letter spacing.
If letters are too close together, we all have difficulty
making them out. However, many dyslexics see letters as crowded together even
when other people think the letters are properly spaced. Zorzi and his
colleagues wondered whether this perceived crowding could be one of culprits
behind the poor reading performance of dyslexics.
The researchers recruited 34 Italian and 40 French children
between the ages of 8 and 14 who had been diagnosed with dyslexia. The kids
were each asked to read 24 short unrelated sentences in their own language.
Half the kids got the sentences printed up with normal spacing, the other half
got the same sentences, but with roughly double the space between letters.
There were compensatory increases in the spacing between words and between
lines. Two weeks later, the groups of kids were switched so that by the end of
the test period each child had had the opportunity to read the samples with
both spacings.
The children were twice as accurate in reading the widely
spaced sentences. They also read more quickly by the equivalent of jumping up
one school year. Kids were also better at identifying letters when those
letters were more widely spaced.
Taken together, this suggests that upon diagnosis with
dyslexia, children should be provided with widely spaced reading material.
Ideally, this would also encourage children to practice reading more frequently
so that they would eventually become proficient enough to read normally-spaced
material.
By the way, in most reading material, the letter spacing is
optimized for skilled readers, not beginners or dyslexics. If that spacing is
increased or decreased, reading pace is slowed down. Compare these paragraphs
for yourself to see how spacing alters your reading fluency.
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