Ask a seven-year-old how long the summer holidays felt and you will hear about an eternity. Ask a fifty-year-old about the last decade and you may get a bewildered laugh: where did it go? The sensation that time accelerates as we get older is one of the most universal human experiences — and psychologists and neuroscientists have spent decades working out why it happens, and whether anything can be done about it.
The phenomenon is real, measurable, and — reassuringly — not simply a trick of nostalgia. It emerges from how the brain encodes memories, allocates attention and processes novelty. Understanding the mechanism points to practical ways of slowing the subjective rush, at least a little.
The memory theory: time is what we remember
The leading explanation centres on a distinction psychologists draw between prospective time (how long something feels while it is happening) and retrospective time (how long it feels looking back). When we judge the last year, we do not replay it minute by minute; we sample our memories. A year packed with novel, distinctive experiences leaves a dense trail of memories and feels long in retrospect. A year of routine — same commute, same desk, same evenings — leaves few distinct markers, so the brain compresses it into almost nothing.
Childhood is almost entirely novelty: first day at school, first bicycle, first everything. Each week lays down rich, distinctive memories, so summers feel endless. Adulthood, for many, becomes routine by design — efficient, comfortable, and mnemonically barren. The years blur not because time itself speeds up but because the brain has less to show for them. This is also why holidays feel short while you are on them (prospective time flies when you are absorbed) but long in memory afterwards — the “holiday paradox,” familiar to anyone who has returned from two weeks in Cornwall feeling they lived a month. The phenomenon has been covered in the BBC’s science reporting. The effect is amplified by attention: practices that train present-moment awareness change the experience directly; see what mindfulness is and whether it actually works.
The proportional theory
An older idea, dating to the 19th century, holds that we judge durations proportionally: at ten, a year is a tenth of your life — an enormous fraction; at fifty, it is a fiftieth, a sliver. There is intuitive appeal here, and it may contribute, but it cannot be the whole story: it predicts a smooth, lifelong acceleration, whereas the subjective speeding seems to kick in most strongly in mid-life, when routine typically peaks.
Attention, novelty and the brain’s clock
Neuroscientists have identified candidate mechanisms for the brain’s internal timing. Dopamine-rich circuits in the basal ganglia act as a kind of pacemaker: more dopamine activity is associated with time feeling slower and richer. Novelty triggers dopamine release — which is why new experiences feel temporally expansive — while routine barely registers. As we age, dopamine function gradually declines, potentially dulling the brain’s time-stamping.
Attention is the other key variable. Time drags when we monitor it (the watched pot) and flies when attention is absorbed elsewhere. Older adults, juggling work, family and mental to-do lists, often live in a state of divided attention — rarely fully present, rarely laying down the rich encodings that make time feel substantial later. Multitasking fragments experience into forgettable slivers. Deliberately disconnecting can help restore attentional depth; see planning a digital-detox weekend in the UK.
The image-processing hypothesis
A more recent proposal from Duke University suggests the brain processes fewer new mental images per second as we age — like a camera dropping its frame rate. In youth, the brain takes many “snapshots,” so events feel extended; with age, fewer frames mean the same objective period contains less experienced content. It is an elegant idea that unifies the memory and attention accounts, though it remains a hypothesis rather than established fact.
Can you slow time down? The evidence-based tricks
If the memory theory is right, the prescription is straightforward: maximise novelty and attention. The research-backed strategies:
Seek firsts
Learn a skill, visit new places, take different routes, eat unfamiliar foods. A year of firsts leaves a dense memory trail and feels longer in retrospect. This does not require grand adventures — a new walking route, a cooking class, a different genre of book all count. Novelty is relative to your routine, not to anyone else’s.
Pay full attention
Mindfulness practices, which train sustained present-moment attention, have been shown by psychological research to alter time perception — meditators often report time feeling richer and more expansive. Even without formal practice, single-tasking (one thing at a time, phone away) measurably increases the memorability of experiences.
Break routine deliberately
Routine is the great compressor. Small disruptions — working from a café, a midweek evening out, rearranging the furniture — create temporal landmarks. Photographs and journalling help too, by giving the brain retrieval cues that bulk up retrospective time.
Accept the trade-off
There is a poignancy here worth acknowledging: the same novelty that stretches time also demands energy, and routine exists because it is efficient. Nobody can live permanently in “firsts.” The realistic goal is not to stop time but to season routine with enough novelty that the years leave a trace worth having.
Why weekends vanish and commutes crawl
The memory theory also explains smaller mysteries of everyday time. The daily commute feels endless in the moment (prospective time drags when we monitor it) yet leaves no trace in memory — a week of commutes compresses to nothing. Weekends vanish for the opposite reason: two days of unstructured routine lay down few distinctive memories, so Monday’s backward glance finds almost nothing. Holidays are the exception that proves the rule: they drag delightfully while happening when full of novelty, then expand in memory afterwards.
There is a practical lesson here for the over-scheduled. A weekend packed with one novel experience — a new walk, a unfamiliar market, a friend you rarely see — will feel longer in retrospect than a weekend of identical errands, even though both last 48 hours. The brain does not count hours; it counts memories. Spend them accordingly.
Conclusion
Time seems to move faster as we age because the brain measures the past in memories, and routine starves it of them — compounded by duller dopamine signalling, divided attention and fewer mental snapshots per second. The effect is not inevitable and not irreversible: novelty, attention and deliberate disruption of routine can genuinely slow the subjective rush. The years will still pass at sixty seconds a minute. Whether they feel like something may be, to a surprising degree, up to us.
Frequently Asked Questions
Why did summer feel longer as a child?
Childhood is dense with novel experiences, which the brain encodes as rich, distinctive memories — making the period feel long in retrospect. Adult routine produces few such markers, so time compresses.
Is the feeling that time speeds up with age universal?
It is reported across cultures and eras, and laboratory studies confirm age-related changes in time perception — though individual lifestyle (novelty, attention) matters more than age alone.
Can mindfulness slow down time?
Practices that increase present-moment attention make experiences feel richer prospectively and more memorable retrospectively — effectively expanding subjective time.
Does time actually pass faster as we get older?
No — objective time is constant. The acceleration is entirely subjective, arising from how the brain encodes, attends to and remembers experience.
