reading

Evidence that dyslexia 'uncouples' reading and IQ over time

January, 2010

A long-running study confirms that, as theorized, in typical readers, IQ and reading track together and influence each other, but neither of these things is true for children with dyslexia.

The ongoing 12-year Connecticut Longitudinal Study, involving a representative sample of 445 schoolchildren, has found that in typical readers, IQ and reading not only track together, but also influence each other over time. But in children with dyslexia, IQ and reading are not linked over time and do not influence one another. Although this difference has been assumed, this is the first direct evidence for it. It should also be noted that the language problem is not confined to reading: those with dyslexia take a long time to retrieve words, so they might not speak or read as fluidly as others.

Reference: 

[550] Ferrer, E., Shaywitz B. A., Holahan J. M., Marchione K., & Shaywitz S. E.
(2010).  Uncoupling of reading and IQ over time: empirical evidence for a definition of dyslexia.
Psychological Science: A Journal of the American Psychological Society / APS. 21(1), 93 - 101.

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Children with home computers likely to have lower test scores

July, 2010

An American study suggests that getting a home computer can have a negative effect on reading and math scores in middle-grade students, particularly those from disadvantaged families.

Data from North Carolina's mandated End-of-Grade tests (2000-2005), which includes student reports on how frequently they use a home computer for schoolwork, watch TV or read for pleasure, reveals that students in grades five through eight (c.10-13), particularly those from disadvantaged families, tended to have lower reading and math scores after they got a home computer. The researchers suggest that the greater negative effect in disadvantaged households may reflect less parental monitoring.

Reference: 

[1635] Vigdor, J. L., & Ladd H. F.
(2010).  Scaling the Digital Divide: Home Computer Technology and Student Achievement.
National Bureau of Economic Research Working Paper Series. No. 16078,

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