Larry Mullen Jr has been speaking to The Kelly Clarkson Show in the US about why the acclaimed new documentary Left Behind means so much to him as the parent of a dyslexic child.
The U2 drummer is among the producers of the film, which tells the story of the efforts of a group of mothers - "incredible women" - to open New York City's first public school for dyslexic children.
Mullen told singer and presenter Clarkson, who is also the parent of a dyslexic child, that the film had given him "incredible hope".
"What does dyslexia mean if you come from Ireland? Well, it's different to if you come from the United States," Mullen explained to the audience.
"I think what the film tries to do is to take parents and kids who are watching it on that journey of kind of what it feels like and how difficult it is. And how stressful it is."
"If you don't take care of your kids through the education system... if you don't take care of it, and if they are dyslexic, the chances are that they're going to get into trouble," he continued.
"You see the statistics for prisons - that's where kids end up. If you don't deal with this, the outcome is poor."
"My son is 29. And he went through a very rough time in school and got diagnosed late and they didn't have a system he could fit into," Mullen recounted.
"So when I got to see this [documentary], it gave me incredible hope that, 'Oh, people can do this'. And not only people, like, (gestures to audience) these women doing this. And they're doing it in a way that nobody else can do it."
"I knew my son was dyslexic, but I didn't really understand him, and it was difficult in the house," Mullen admitted.
"I've spent all my career avoiding talking about my family - just don't want to involve them - and now here I am on your show talking about my family! I'm going, 'So what happened?'
"And what happened was I saw this documentary and it hit home. And I kind of felt, 'Ok, I need to deal with this'.
"Realising and recognising what I didn't do, and what I could have done... so what can I do now? And how can we better understand our kids who are going through these things?"
Mullen also contributes original songs to the soundtrack of Left Behind.
Last year, he revealed that counting bars within music is like "climbing Everest" for him due to dyscalculia, which affects his ability to use and acquire mathematical skills.
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