Writing
Does object permanence affect adults, not just kids?
A friend goes quiet for a month and someone, maybe them, maybe a TikTok comment, says you clearly “have no object permanence.” So you go looking to find out whether that is a real, diagnosable thing in a grown adult, or whether you are just being flaky with extra vocabulary.
Object permanence is the understanding that a person or object keeps existing even when you can’t see it. It doesn’t fade. Every brain that makes it past infancy keeps that understanding for life: play peekaboo with a baby who has grasped it and they reach for you the moment you vanish behind your hands, rather than looking away as if you had stopped existing. What gets called “object permanence” in adult conversation is a borrowed metaphor for something else entirely: trouble recalling or prioritising a person who isn’t currently in front of you.
What the term actually means, developmentally
The idea traces back to Jean Piaget’s research into infant cognition. Before an infant grasps it, a hidden object is, to them, simply gone. After, the infant will search for it, lifting the cushion, patting the blanket, because they now understand it still exists somewhere they can’t see. It’s also the reason this piece exists at all: Coppice, an app for keeping track of the people in your life, gets asked about the ADHD version of this phrase often enough to be worth separating the metaphor from the milestone.
So why do people say adults “lose” it?
They’re describing something real. Just not that. Nobody genuinely believes a friend has stopped existing because the group chat’s gone quiet, the same way nobody believes a phone has vanished once it slides under a cushion; you still pat around the sofa for it later. What actually goes missing is the nudge. Without a message arriving, a calendar entry, or a photo resurfacing on a lock screen, that friend doesn’t return to mind on their own. Recalling someone and ranking them against everything else asking for attention right now, with no visual cue forcing the issue, is the part that gets hard. Believing they’ve vanished from the world altogether is not.
| Object permanence (literal) | The community usage | |
|---|---|---|
| What it is | A developmental milestone, mastered in infancy | A metaphor for a memory and attention pattern |
| What’s affected | Nothing, in a neurotypical or ADHD adult | Recall and prioritisation without visible cues |
| Where it comes from | Piaget’s infant cognition research | Community shorthand for “out of sight, out of mind” |
Is this an ADHD thing?
Lots of people with ADHD describe this exact pattern: a friend drops out of view and drops out of mind not because the friendship stopped mattering, but because nothing brought them back to mind. That’s a fair description of a lived experience. It isn’t a diagnosis. Using “object permanence” as its label borrows weight from a concept it doesn’t actually describe.
What’s really happening when you “forget” someone
Working memory holds a small number of things active at once, and a person who isn’t texting you, isn’t on your calendar, and isn’t in any photo that resurfaces isn’t one of them. That’s a cue problem. Not a permanence problem. The friend still exists exactly the way you always knew they did. What’s missing is a prompt to bring them back into view before the gap gets long. Coppice works on that basis: it scores how far each relationship has drifted from your normal rhythm with that person and surfaces a short daily list, so the cue turns up there rather than depending on you remembering to look.
Seen as a missing cue rather than a missing concept, the fix stops being “care more” and starts being “get better cues.” That’s also the more useful question if it’s the forgetting itself that worries you, rather than the label for it.
Common questions
Is “object permanence” ever the correct clinical term for this in adults? No. Clinically, object permanence describes an infant milestone. There’s a related term, “object constancy,” for trusting that a relationship holds even when it’s rocky, but that’s a different problem again, and still not what most people mean when they use the phrase casually about forgetting a friend.
Does having ADHD mean I’ll always struggle with this? It means cues matter more for you than for some people, not that the difficulty is fixed. ADHD object permanence in friendships specifically covers how that plays out day to day.
Is an app like Coppice just outsourcing the memory? In a sense, the same way a calendar outsources remembering a birthday. What gets outsourced is the cue, the reminder you’d otherwise have to generate from nothing, rather than the relationship itself.
Is this the same as being a bad friend? No. A cue failure and a caring failure produce the same silence from the outside, but they need completely different fixes, and only one of them is about how much you actually care.
Coppice is an iPhone app that notices when someone you care about is drifting out of touch and nudges you at the right moment. Get it on the App Store.