Seek New Experiences
Novel experiences create distinct memories. Travel to new places, try new activities, meet new people.
Based on Draaisma's research
Research Insights
Why Time Speeds Up As You Get Older
An interactive exploration of the science behind one of life's most universal experiences—the perception that time accelerates as we age.
Based on research by
Adrian Bejan&Douwe Draaisma
The Phenomenon
Remember when summer vacations felt like they lasted forever?
As children, a single year seemed to stretch on endlessly. The wait between birthdays felt like an eternity. Yet as adults, years blur together and decades pass in what feels like moments.
This isn't just nostalgia—it's a well-documented psychological and neurological phenomenon that scientists have studied for over a century. Two complementary theories help explain why.
“The human mind experiences the passage of time through mental images, and these images are produced more slowly as we age.”
“New experiences create detailed memories. Routine compresses time into forgettable chunks.”
Theory 1: The Physics
Your Brain Literally Slows Down
Research by Adrian Bejan (2019) · Duke University · European Review
Adrian Bejan, a mechanical engineer at Duke University, proposed a physics-based explanation: as we age, our brains process fewer “mental images” per unit of clock time.
This happens because neural pathways degrade, signal transmission slows, and our saccadic eye movements (rapid movements that capture visual information) become less frequent.
Slower Eye Movements
Longer Neural Paths
Signal Degradation
Mental Image Rate Simulator
Adjust the slider to see how mental image processing changes with age.
5 years80 years
Mental Images Per Second
21
78% of a 10-year-old's rate
Visual Comparison
Age 10:
Age 25:
Since you measure “experienced time” by mental images processed, fewer images means time feels like it's moving faster.
The Proportional Effect
See how one year represents a different fraction of your life at different ages.
1 year80 years
One year is
3.3%
of your life so far
20%
at age 5
4%
at age 25
2%
at age 50
The Reminiscence Bump
Most vivid memories cluster between ages 15-25, when we experience the most “firsts.”
0-10
15%
10-20
35%
20-30
30%
30-40
12%
40-50
5%
50-60
3%
First kiss, first job, first apartment—these “firsts” create detailed, time-stamped memories that make those years feel longer in retrospect.
Theory 2: The Psychology
Memory Shapes Our Sense of Time
Research by Douwe Draaisma (2004) · University of Groningen · Cambridge University Press
Psychologist Douwe Draaisma offers a memory-based explanation. His key insight: we measure past time by the memories we've created, not by clock time.
Childhood is packed with novel experiences—each one creating a distinct, detailed memory. Adult life becomes routine, and our brain “chunks” similar experiences into single memories.
Novel Experiences
Create detailed memories, slowing perceived time
Memory Chunking
Routine compresses years into single memories
Proportional Theory
Each year is a smaller fraction of life
Reminiscence Bump
Ages 15-25 hold the most vivid memories
Practical Implications
How to Slow Down Time
Both theories suggest practical ways to make life feel richer and longer.
Practice Mindfulness
Being fully present increases the density of perceived moments, slowing subjective time.
Based on Both's research
Break Your Routines
Routine causes memory chunking. Vary your daily patterns to create more memorable moments.
Based on Draaisma's research
Learn New Skills
Learning engages the brain intensely, creating rich neural activity and detailed memories.
Based on Bejan's research
Pay Attention to Details
Consciously noticing your environment increases the mental images your brain processes.
Based on Bejan's research
Create "First" Experiences
First-time experiences anchor memories more strongly. Pursue new "firsts" throughout life.
Based on Draaisma's research
Research Curator
About This Project
Sunil Kumar R
Sr. UX Designer at OpenTextBengaluru8 Years Experience
This interactive experience was created to make complex research about time perception accessible to everyone. With a human-centered design approach, I aimed to transform academic papers into an engaging learning journey—because understanding how we experience time can help us live more meaningfully.
Academic Sources
Research Citations
This interactive experience is based on peer-reviewed research from Cambridge University Press.
Journal Article2019
Why the Days Seem Shorter as We Get Older
Adrian Bejan · European Review, Volume 27, Issue 2 · Cambridge University Press
Proposes a physics-based explanation linking neural signal processing speed and saccadic eye movements to our perception of time acceleration with age.
View Original Publication(opens in new tab)Book2004
Why Life Speeds Up As You Get Older
Douwe Draaisma · How Memory Shapes Our Past · Cambridge University Press
Explores the psychological mechanisms behind time perception, including the proportional theory, reminiscence bump, and the role of novel experiences in memory formation.
View Original Publication(opens in new tab)