You meant to text your friend on her birthday. You thought about it that morning, and then a week went by. Many adults with ADHD describe this kind of thing as "object permanence" trouble, where people and plans seem to fade when they are not in front of you. It is a popular internet term, not a diagnosis. The real story is mostly about attention and working memory, and it has nothing to do with how much you care.
This post is general information, not medical advice or a diagnosis.
What people mean by object permanence and ADHD
Online, people with ADHD use "object permanence" to describe a feeling of out of sight, out of mind. A friend you do not see for a while can slip from your thoughts. A plan that is not written down can vanish. A partner who is away for a week can feel oddly far away.
People use the phrase because it fits how it feels. It gives a name to something that can be confusing and embarrassing. But it helps to know what the words really mean, so you can be kinder to yourself.
Where the term comes from, and why it is not a clinical term
In child development, object permanence means a baby learning that a toy still exists when it is hidden under a blanket. Adults with ADHD have this skill. You know your friends exist when they are not in the room.
So the popular use is a loose way of talking. It is not a symptom listed for ADHD, and it is not a missing skill. What many people are describing is that things which are not in view do not get pulled into attention as often. That is a different and more hopeful story, because it points toward tools that help.
Working memory, in plain words
Working memory is like a small whiteboard in your mind. It holds what you are using right now, like a phone number you are about to dial or the thing you walked into the kitchen to get.
A review of 38 studies found that adults with ADHD, as a group, showed working memory differences compared with adults without ADHD (Alderson and colleagues, 2013, see Sources). The National Institute of Mental Health also describes ADHD as a pattern of inattention and, for some people, hyperactivity and impulsivity (see Sources).
When the whiteboard is busy, things that are not in front of you get wiped off sooner. That includes people.
Out of sight, out of mind with people
Our post on why people with ADHD lose things covers keys, phones and wallets. People are different, because there is more feeling involved.
With people, out of sight, out of mind might look like:
Forgetting to reply to a message you read and meant to answer
Losing track of how long it has been since you called someone
Missing birthdays or check-ins you care about
Feeling close when you are together and distant when you are apart
None of these mean the person matters less. They mean your brain needs outside help to keep them in view.
When it shows up in friendships
Many adults with ADHD describe friendships with long quiet gaps. Months pass. Then you see each other and it is like no time has gone by. These friendships can be strong and lasting.
The hard part is that friends may not know what the silence means. They might wonder if they did something wrong. Some people with ADHD also feel nervous about reaching out after a long gap, so the gap grows. Our post on friendship anxiety talks about that worried feeling.
It can help to tell close friends, "If I go quiet, it is not about you. I think of you more than I text."
When it shows up in a relationship, including long distance
In a relationship, forgetting can sting. Your partner might read a missed call or a forgotten plan as a sign that you do not care. You might feel hurt that they do not see how much you do.
Naming it together can lower the heat. You can say, "This is something my brain does, and I want to plan around it with you." Then you can choose a plan side by side.
Long distance adds another layer. When your partner is not in the room, they are not in view. Some couples find it helps to set regular call times, share photos through the day and keep a picture of each other somewhere you both see often.
Not missing people, and the guilt that follows
Some people with ADHD say they do not miss others the way they think they "should". Then they feel guilty or wonder if something is wrong with them.
Many people describe it this way, and it is not proof that you love less. Missing someone often depends on thinking about them. When attention is pulled in a hundred directions, those thoughts come less often. When you do think of them, the love is still there.
Guilt can turn into shame, and shame can make you avoid people even more. Try to separate what you did, like forgetting to call, from who you are. You can repair a missed call. You are not a bad friend because you forgot.
Small systems that keep people in view
The goal is to put people where your eyes already go. Small, simple systems tend to work better than big ones. A few ideas:
Visible reminders. A sticky note on the fridge or mirror with a name on it.
Repeating phone reminders. A weekly nudge to text one person.
Photos where you see them. On your desk, your fridge or your lock screen.
A short people list. Five to ten names you want to stay close to, kept where you will see it.
Pair it with a routine. Text a friend while your coffee brews, or call a parent on your Sunday walk.
Write birthdays down once. Put them in your calendar with a reminder a few days ahead.
Start with one idea, not all of them. If it stops working, that is normal. Swap it for a new one.
If you are the friend or partner who feels forgotten
If someone with ADHD in your life goes quiet, it is okay to feel hurt. Your feelings matter too.
It helps to be specific about what you need. "Can you text me when you get home?" is easier to follow than "I wish you thought of me more." You can also ask for a plan, like a standing call on Thursdays.
Try not to keep score in silence. Saying it kindly and clearly gives the relationship a chance to adjust. Many people with ADHD are relieved when someone they love asks for something clear.
Small repairs after a long gap
If you have gone quiet for a long time, reaching out can feel hard. You might worry the other person is upset or that it is too late.
Keep it simple. You do not need a long apology. Something like "I've been thinking about you and I'm sorry I went quiet. How are you?" is often enough. Most people are glad to hear from you.
If someone tells you they felt hurt, listen without arguing. Thank them for telling you. Then share one small thing you will try, like a weekly reminder to check in.
Common questions about object permanence and ADHD
Is object permanence a symptom of ADHD? No. It is a popular way to describe a common experience. It is not a diagnostic term.
Does it mean I don't care about people? No. It usually reflects attention and working memory, not a lack of love.
What about emotional permanence? Some people also use "emotional permanence" for trouble holding onto a feeling of being loved when someone is away. That is a separate topic.
Can counselling help? Yes. A counsellor can help you understand your patterns, ease the guilt and build systems that fit your life.
If you are thinking about suicide or hurting yourself, call or text 9-8-8 now. If you or someone else is in immediate danger, call 911.
How counselling for ADHD helps
Counselling with an ADHD-informed counsellor can help you understand how your brain works with people, not against them. Together you can build simple systems, ease the shame that comes from missed moments and practise talking with friends and partners about what you need.
Our ADHD counselling page explains how we work with adults. Sessions are available at our Kitchener-Waterloo, Cambridge and Ottawa offices and online across Ontario.
Cost, billing and your first step
Sessions with our therapists range from $130 to $200, depending on the clinician.
We accept Health Spending Accounts (HSAs).
We can direct bill many insurers. Coverage depends on your plan, so check with your insurer before you start.
Book a free 15-minute consultation with our admin team. If keeping people in view is hard with ADHD, our counsellors can help you build systems that fit your brain.
If you're in crisis: if you or someone you love is in immediate danger, call 911. If you're thinking about suicide, call or text 9-8-8 any time, day or night.
Last reviewed: October 2026
Sources
Alderson RM, Kasper LJ, Hudec KL, Patros CHG. "Attention-deficit/hyperactivity disorder (ADHD) and working memory in adults: a meta-analytic review." Neuropsychology. 2013;27(3):287-302. https://pubmed.ncbi.nlm.nih.gov/23688211/
National Institute of Mental Health. "Attention-Deficit/Hyperactivity Disorder." https://www.nimh.nih.gov/health/topics/attention-deficit-hyperactivity-disorder-adhd
Centre for Addiction and Mental Health. "Attention-deficit/hyperactivity disorder." https://www.camh.ca/en/health-info/mental-illness-and-addiction-index/attention-deficit-hyperactivity-disorder