Two kids at the same kitchen table. Same books, same parent, same lessons. One reads the cereal box aloud before breakfast is poured. The other stares at the same sentence like it is written in smoke.
If that is your house, you have run the experiment already, even without meaning to. Same home, same teaching, two completely different results. Your struggling child is not broken, and you did not do anything wrong. Their brain is processing one kind of information differently, and the sibling beside them is the clearest proof of it.
That contrast is not a problem to explain away. It is a gift. It rules out the things parents blame themselves for and points straight at what actually differs, which specific skills are further along in one child than the other.
TL;DR
- When siblings get the same teaching and one thrives while the other struggles, the difference is how each brain processes specific information, not effort, parenting, or intelligence.
- That built in comparison is useful. It rules out the home and the teaching and points to the exact skills that are further along in one child than the other.
- The move is to build the specific underbuilt skill in the struggling child, not to match a learning style, an idea researchers tested and set aside.
The sibling sitting beside them is the clearest proof that this was never about effort or parenting.
“– Laura Lurns
The Experiment You Already Ran
Two children, one home, one set of lessons, two different outcomes. Without meaning to, you have controlled for almost everything people point to when a child struggles. It is not the curriculum, because the other child got the same one. It is not your parenting, because it built the reader across the hall. What is left is the part nobody sees from the outside, how each brain takes in and works with information. Reading, for instance, leans hard on phonological processing, the skill of hearing and separating the sounds inside words. One child’s system locked that in early. The other is still wiring it. Same table, different construction schedule.
It Is Not a Learning Style
The tempting explanation is that your kids have different learning styles, so each needs a matching teaching style. It is worth knowing that researchers tested that idea in 2008, and again in 2024, and found no benefit to matching instruction to a supposed style. Nearly nine in ten teachers still believe it anyway, which tells you how sticky a comfortable story is. The truer picture is sharper and more hopeful. Children differ in which processing skills are built, not in some fixed style they are stuck with. A skill that is behind is a skill you build. Your struggling child holds the same capacity for reading pathways as their fluent sibling. Brain imaging shows children who close the gap once instruction targets the missing piece. The comparison is not a verdict. It is a map.
Parents apologize to me for comparing their kids, as if noticing the difference is unfair. I tell them the opposite. That comparison is the most useful information you have. It strips away the blame and shows me exactly where to look. We find the skill that is behind, we build it directly, and the sibling gap stops being a source of worry and becomes a finish line we are walking toward.
Key Takeaways
Siblings under one roof act as a natural experiment. When teaching is equal and results differ, the cause sits in how each brain processes information.
The struggle is about specific underbuilt skills, not learning styles, an idea researchers tested and set aside back in 2008.
A skill that is behind is a skill you build. The fluent sibling is proof of the capacity, not a standard the other child fails to meet.
The comparison is not a verdict. It is a map.
“– Laura Lurns
What the Comparison Is Telling You to Do
Stop measuring one child against the other and start reading the contrast for information. Where exactly does the struggling child slow down, sounding out, holding a word in mind, keeping their place on the line? That is your target. The Brain Bloom program is built to find and strengthen those specific processing skills one at a time, which is what the sibling comparison keeps pointing you toward. Here is the heart of it. You value both of your children exactly as they are. A school system that sorts kids into fast and slow, instead of building the skill underneath, has the wrong job description. You are the one who sees both children every day, which makes you the person best placed to build what is missing. Struggles like this rarely arrive alone. A child who lags in reading often shows signs in attention or working memory too, the skills a whole child plan grows together. The Learning Success All Access program starts with a free assessment that names which skills to build first, then gives you a daily plan. Start the free seven day trial and turn the comparison into a plan.
Common questions from parents
Does one sibling struggling mean the other could too?
Should I use different teaching methods for each child?
Is it harmful to compare my children?
Could the struggling child be dyslexic?


