What Are Executive Functions?
You may come across the term executive functions quite quickly when you start learning about ADHD.
It is often used to explain difficulties with planning, organisation, working memory, starting tasks and managing time. Sometimes it is described as the brain's management system or control centre.
Those descriptions can be useful as a starting point, but they can also make executive functioning sound like one single ability that is either working properly or isn't.
The reality is more nuanced.
Executive functions are a group of mental processes that help us organise and regulate what we do. They are involved whenever you need to hold something in mind, resist an immediate response, shift from one thing to another, plan ahead or keep your behaviour directed towards something you intend to accomplish.
Most of this happens without us thinking about the individual processes involved.
We tend to notice them only when something doesn't happen as expected.
Executive functions help turn intentions into action
Think about something as ordinary as leaving the house for an appointment.
You need to remember that the appointment is happening, have some sense of how much time you have available and work out when you need to start getting ready. You need to stop whatever you're currently doing, gather what you need, remember any extra tasks you've attached to leaving the house and keep yourself moving through the sequence until you actually leave.
If something interrupts you halfway through, you need to return to what you were doing.
There are several executive processes involved in that fairly unremarkable part of the day.
When they work smoothly, there is little reason to notice them.
When they don't, you may experience something quite different. You knew what time the appointment was. You genuinely intended to leave early. Somehow you started getting ready later than planned, remembered something else at the last moment and arrived rushing again.
The difficulty can be hard to understand because there is no obvious gap in knowledge.
You knew what needed to happen.
The difficulty was organising your behaviour around what you knew.
There isn't one single executive function
Researchers don't all divide executive functioning in exactly the same way, so you may encounter slightly different lists depending on what you read.
Some of the processes commonly discussed include working memory, which helps keep information temporarily available while you use it; inhibitory control, which helps create a pause before responding or acting; and cognitive flexibility, which helps us shift our attention or approach when circumstances change.
Broader descriptions of executive functioning may also include processes involved in planning, organising, monitoring progress, prioritising and beginning tasks.
These processes work together constantly, which is one reason everyday difficulties don't always fit neatly into a single category.
If you haven't started a task, for example, the difficulty may involve initiation. But perhaps the task also has several unclear steps, there are competing priorities and you are trying to hold too much information in mind at once.
What looks from the outside like one problem can involve several processes interacting.
Working memory keeps information available while you need it
Working memory isn't the same thing as remembering something that happened years ago.
It is the temporary mental workspace that allows you to hold information in mind while you're doing something with it.
You use it when someone gives you several instructions and you keep them available long enough to follow them. You use it while doing mental arithmetic, following a conversation or remembering what you were about to do after an interruption.
When working memory is less reliable, an intention can disappear surprisingly quickly.
You may walk into another room and forget what you came to get. You think of something you need to do later, become occupied with something else and the thought is gone. During a conversation, you may be trying to listen while also holding onto the point you wanted to make, only to find that one of those things slips away.
This can easily be interpreted as not caring or not listening.
Sometimes the information simply hasn't remained sufficiently available to guide what happens next.
Inhibition helps create space between impulse and action
Inhibitory control is involved when you need to pause an immediate response.
Perhaps you have a thought during a conversation and need to hold it rather than interrupting. You notice your phone while working and resist checking it. Something captures your attention, but you stay with what you intended to do.
Inhibition doesn't mean suppressing every impulse or never becoming distracted. Everybody's ability to inhibit a response varies depending on the situation.
In ADHD, difficulties with inhibition can form part of a broader pattern of executive difficulty.
This might appear as speaking before you've fully considered what you want to say, following a distraction before noticing you've left the original task, or acting quickly and thinking through the consequences afterwards.
Understanding the process doesn't remove responsibility for behaviour.
It gives us more precise language for understanding where the difficulty may be occurring.
Shifting allows us to move when something changes
Executive functioning is also involved when you need to change direction.
You may need to stop one task because it is time to begin another, switch between different kinds of work or change your approach when something isn't working.
Sometimes shifting happens easily.
At other times, you can know perfectly well that you need to move on and still find yourself continuing with what you're doing.
This can be especially confusing when the current activity is holding your attention strongly. You may tell yourself several times that you need to stop, while another twenty minutes passes.
Difficulty shifting can also appear when returning after an interruption. Once your attention has been pulled somewhere else, finding your way back into the original task may require more effort than the interruption itself would suggest.
This is one reason executive functioning isn't simply about getting yourself to concentrate.
Sometimes the challenge is getting attention to move.
Planning is more than deciding what you want to do
Making a plan can look like a single activity, but it relies on several things happening together.
You need to identify the goal, work out what steps are involved, decide what needs to happen first, estimate what will be required and keep enough of that information available to guide what you do.
Then the plan has to be carried out.
This distinction can matter for people who are very good at planning on paper.
You may enjoy making lists, creating systems or mapping out exactly how something should happen, then find that following the plan is much less straightforward.
An interruption changes the timing. One step takes longer than expected. Another task suddenly feels more urgent. You lose track of what you intended to do next.
The original plan may have been perfectly sensible.
The difficulty appeared in keeping behaviour aligned with it as circumstances changed.
Starting can be difficult even when you know exactly what to do
Task initiation is one of the experiences that often brings people to information about executive functioning.
You have something you need to do. You understand it. You have enough time. You may genuinely want it finished.
And yet you don't begin.
Perhaps you do several smaller things first. You keep thinking about the task without moving towards it. You wait until the pressure becomes uncomfortable enough that suddenly you can start.
When this happens repeatedly, it can be difficult not to interpret it as procrastination, avoidance or lack of discipline.
Those explanations may sometimes be relevant. People put things off for many reasons.
But difficulty translating an intention into action can also be part of executive functioning difficulties associated with ADHD.
The distinction becomes especially useful when the problem isn't I decided not to do it, but I kept intending to do it and couldn't understand why I wasn't starting.
Executive difficulties can look like motivation problems
From the outside, executive difficulties are often visible only through their outcomes.
The task wasn't started.
The deadline was missed.
Something was forgotten.
The plan wasn't followed.
The person became distracted.
It is easy to look at those outcomes and assume the missing ingredient was effort.
That interpretation becomes particularly convincing when the same person functions extremely well in another situation.
Someone may struggle for days to begin a routine task and then complete an enormous amount of work when a deadline becomes immediate. They may find household administration overwhelming while managing complex responsibilities effectively at work.
If they are capable of doing difficult things, why can't they do this one?
Executive functioning gives us a more useful way to examine that question because it directs attention towards the processes and conditions involved rather than judging capacity from the final outcome alone.
Context can change how difficult executive functioning feels
Executive functioning isn't completely stable from one situation to another.
Structure can help. So can clear expectations, immediate feedback, external deadlines and another person providing accountability or direction.
Interest and urgency may also change how readily someone can engage with a task.
This means a person can appear highly organised in one environment and struggle considerably in another without either version being false.
At work, the day may have meetings, deadlines, established processes and other people expecting particular outcomes. At home, the person may need to decide what matters, remember what needs doing, prioritise competing tasks and create the structure themselves.
The tasks might look easier at home.
The executive demands may not be.
This is one reason understanding the environment can be as important as looking at the person.
People often build their own executive support without realising it
If certain processes have been difficult for a long time, you may already have developed ways of supporting them.
Perhaps everything goes into your calendar immediately because you know you won't reliably remember it later. You keep important objects in fixed places. You set several alarms, leave things beside the door, write detailed lists or ask someone to remind you.
You may choose jobs with clear deadlines or work particularly well when another person is involved.
After years of doing these things, they can simply feel like preferences.
You may even see them as evidence that executive functioning isn't difficult for you.
I'm very organised.
Perhaps you are.
But it can also be useful to notice what makes that organisation possible.
A successful strategy doesn't necessarily mean the underlying process is effortless. Sometimes the strategy is evidence that you have learned what happens when you try to rely on that process without support.
Executive functioning difficulties aren't unique to ADHD
Recognising yourself in descriptions of executive functioning doesn't mean you have ADHD.
This is an important distinction because many of these experiences are widely relatable.
Stress can make it harder to hold information in mind. Poor sleep can affect concentration and self-regulation. Anxiety, depression and other mental or physical health conditions can affect executive processes. Overload can make planning and prioritising difficult for almost anyone.
ADHD is therefore not diagnosed by identifying executive functioning difficulties alone.
Clinicians consider the broader pattern of ADHD symptoms, whether relevant difficulties were present during development, whether they occur across settings, how they affect functioning and whether another explanation better accounts for what is happening.
If you're exploring whether ADHD might be part of your experience, executive functioning can give you useful language for describing what is difficult.
It cannot, by itself, tell you why the difficulty is there.
Executive functioning is useful for understanding ADHD, but it isn't the definition of ADHD
This distinction is worth holding onto because executive functioning is sometimes used as though it is interchangeable with ADHD.
It isn't.
Executive functioning is a framework that helps explain some of the cognitive processes involved in everyday functioning. Difficulties in these areas are strongly associated with ADHD and can help make sense of experiences that the word attention alone doesn't adequately describe.
But there isn't one executive functioning profile shared by every person with ADHD, and executive function testing alone isn't how ADHD is diagnosed.
Some people may have particular difficulty with working memory. For others, initiation or shifting may be more noticeable. The environment can change how much those difficulties interfere, and the same person's functioning can vary considerably depending on what they are being asked to do.
So executive functioning gives us another layer of understanding.
It doesn't replace the clinical definition of ADHD.
The distinction can change how you understand a difficulty
The value of learning about executive functioning isn't in being able to label every mental process correctly.
It is in becoming more specific about what is happening.
If something repeatedly doesn't get done, I need to try harder doesn't tell you very much.
Neither does my executive functioning is bad.
You may learn more by looking closely at where the process becomes difficult.
Did the intention disappear once something else demanded your attention?
Did you know what needed to happen but struggle to begin?
Were there too many steps to keep track of?
Did an interruption make it difficult to return?
Was the problem deciding what mattered most?
Or did you become so engaged in something else that shifting away from it was the difficult part?
There may be several things happening, and they won't always involve ADHD.
But identifying the point at which something becomes difficult can give you much more useful information than judging yourself by whether the task was eventually completed.
That is what the idea of executive functioning can offer.
It gives us language for some of the work the mind is doing between I know what I need to do and I've done it.
A moment to wonder
Think about something you regularly intend to do but find unexpectedly difficult to carry through.
Rather than asking why you haven't simply done it, you might notice where the difficulty seems to appear.
Is it remembering the intention, beginning, holding the steps together, staying with what you're doing, shifting back after an interruption or stopping something else so you can move on?
You don't need to identify the correct executive function, and recognising one of these patterns doesn't tell you whether you have ADHD.
It may simply give you a more precise way to understand what has been difficult.
Keep exploring
There’s more to explore across Through the Disconnect, from understanding ADHD and life after diagnosis to masking and making sense of your experience.
References
Australian ADHD Professionals Association. (2022). Australian evidence-based clinical practice guideline for ADHD.
Center on the Developing Child at Harvard University. Executive Function & Self-Regulation.
Willcutt, E. G., Doyle, A. E., Nigg, J. T., Faraone, S. V., & Pennington, B. F. (2005). Validity of the executive function theory of attention-deficit/hyperactivity disorder: A meta-analytic review. Biological Psychiatry, 57(11), 1336–1346.
Faraone, S. V., Banaschewski, T., Coghill, D., et al. (2021). The World Federation of ADHD International Consensus Statement: 208 evidence-based conclusions about the disorder. Neuroscience & Biobehavioral Reviews, 128, 789–818.
