Monday, 19 November 2012

Visual data collection problems. Evidence from Binocular eye tracking.

When you measure the way in which a fluent reader’s eyes move as they read.
And show it on a graph. This is the pattern which you see.

If you  look at the eye movements of a person who us having difficulties, sometimes but not always reporting visual stress.. This is the sort of pattern that you see. Basically you would not want to walk up the steps!

 This is actually quite a good one. In the top one the person was using far fewer photographs/ fixations to get through each line of text. This is likely to reduce demand on an already limited working memory if a person is dyslexic.
When a person has their visual stress issues dealt with . The reader at the bottom reads more like the fluent reader. 
There are case studies which I can send out. The explanations get complex.
It has often been said that the eye movements are a result of the phonological problems.
But the case studies show the reverse.  The reading fluency of the people with visual stress issues end up no different to the fluent reader population.

( sorry arial again!)
Should this be ignored?

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