It can be deeply frustrating when your child sounds out a word perfectly, only to act like they’ve never seen it before on the very next paragraph. This layout-dependent memory failure is often a symptom of visual fatigue. If the brain is working too hard to integrate visual data from the eyes, it cannot successfully move that word into long-term visual memory. The word looks completely different to them because the text has distorted in a new way on the new line.

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