After a 15 minute delay, participants were able to recall 14% more information if it was presented in the disfluent.
A future study of course should be with younger students and we would hope dyslexics. Many dyslexics and people working with dyslexic students have noticed that font and color can affect both readability and memorability for text.
Not ever child has problems, but in our experience, those with limited visual spans do - so much in fact that they may see an increase in their reading abilities if switched to different fonts or even more challenging early readers in which word length vary. If these kids are older late readers who have a strong listened vocabulary, then they may quickly progress with books like Geronimo Stilton (above) that have fairly challenging vocabulary, but visual cues and elaborated fonts to aid the decoding process.
Hopefully the publishers of educational curriculum will catch up to all this. Visual perception principles are not just for wonky science aficionados. They're what we need for the classroom.