What Is Executive Function in Children?

Executive function is the mental control system: the set of processes that let somebody start something, hold on to what they are doing, stop themselves doing something else, and change approach when the first one fails. It is the machinery behind almost everything adults describe as being sensible, and it is under construction for the whole of childhood and well past it.

The three parts

Most accounts break it into three, and the split is useful because a child can be strong in one and weak in another.

• Working memory. Holding information in mind while doing something with it. Remembering the second half of an instruction. Keeping the beginning of a sentence in mind while reading the end of it. Doing a sum without writing every step down.
• Inhibition. Not doing the first thing that occurs to you. Not shouting the answer, not grabbing, not hitting when furious, not opening the game when the homework is out. This is the slowest to mature and the most visible when it is absent.
• Cognitive flexibility. Switching approach when something is not working; seeing a problem from another angle; coping when a plan changes. This is what is under strain when a small change to the routine produces a large reaction.

A great deal of what gets described as attitude is a nine-year-old's inhibition doing exactly what a nine-year-old's inhibition does.

Why it matters that it develops slowly

These capacities improve steadily through childhood and continue maturing into the mid-twenties. That timeline is the single most useful thing a parent can know about it, because it reframes an enormous amount of daily friction.

A seven-year-old who cannot hold a four-part instruction, an eleven-year-old who forgets the bag every week, a fourteen-year-old who leaves an essay to the last night. None of these are character. They are a system that is not finished, being asked to perform like one that is.

This is not an argument for expecting nothing. It is an argument for scaffolding: providing from the outside what the child cannot yet provide from within, and withdrawing it gradually.

What it looks like in ordinary life

• Getting started on something they do not want to do
• Remembering what they went upstairs for
• Waiting for a turn without the wait becoming unbearable
• Stopping one activity to begin another
• Coping when the plan changes at short notice
• Keeping track of belongings across a day
• Planning backwards from a deadline

Why it is worth attending to

Executive function is one of the better predictors of how children get on at school, in some studies comparable to early ability measures, and it is associated with a range of outcomes beyond academics. It is also more malleable than raw ability, which is why it is worth building deliberately.

Two cautions. Most of that evidence is correlational, so it shows association rather than proof of cause. And commercial brain-training aimed at these capacities has repeatedly produced gains on the trained exercise that do not transfer to schoolwork or daily life. What does appear to help is more ordinary: complex play, games with rules, physical activity, sleep, and adults who scaffold rather than either rescue or abandon.

The system is being built for the whole of childhood. Most of what looks like unwillingness is a capacity that has not arrived yet.