Many people notice that the years seem to pass faster as they get older, even though individual days often feel no shorter than before. Psychologists say this is more than just a common saying. A growing body of research suggests that our perception of time changes throughout life due to the way memory, attention, routine, and emotions shape our experiences.
Studies indicate that the brain does not measure time like a clock. Instead, our memories largely determine how long periods of life seem in retrospect. Researchers also suggest that modern habits, including frequent smartphone use, may contribute to the feeling that weeks and months disappear more quickly than expected.
Why Time Seems to Speed Up With Age
One of the most influential studies on time perception was conducted by psychologists Marc Wittmann and Sandra Lehnhoff, who surveyed 499 people between the ages of 14 and 94. Published in 2005, the research examined how quickly participants felt different periods of time passed.
The researchers found little difference between younger and older participants when they judged short periods such as individual days or weeks. The biggest differences appeared when participants reflected on much longer periods, particularly the previous ten years. Older adults were far more likely to report that the last decade had passed surprisingly quickly.
These findings suggest that the sensation of time accelerating is primarily related to how people remember long periods of life rather than how they experience each day as it unfolds.
Other research, including a study conducted at Jagiellonian University involving 295 adults aged 18 to 63, also found that age, gender, and education influence how people perceive time, highlighting that time perspective is shaped by multiple psychological factors.
Memory Shapes Our Sense of Time
A major explanation involves the way human memory works.
Rather than recording life continuously, the brain stores experiences that are emotionally significant, unusual, surprising, or personally meaningful. Routine events, by contrast, receive much less attention and often leave weaker memories.
Children and teenagers constantly encounter new experiences. Their first day at school, first independent trip, first job, or first journey abroad all require greater attention and become rich, detailed memories.
As adults, however, many daily activities become repetitive. Similar workdays, commutes, and household routines create fewer memorable experiences. When looking back, these routine periods blend together, making months or even years appear to have passed unusually quickly.
Novel Experiences Leave Lasting Memories
Researchers have also found that novel experiences create stronger memory traces.
A 2024 study published in Scientific Reports followed 18 older adults over eight weeks. Participants used a smartphone application to record both everyday routines and unusual experiences, producing a total of 670 logged events.
Later, participants remembered distinctive experiences much more accurately than ordinary daily activities. Those unusual moments were also associated with better moods and lower levels of boredom, suggesting that novelty benefits both memory and psychological well-being.
Interestingly, enjoyable experiences often seem to pass quickly while they are happening. Yet because they generate richer memories, they frequently feel much longer and more meaningful when recalled later. A vacation, celebration, or exciting day trip may seem to fly by in the moment but occupy a much larger place in memory than several routine workdays.
Why Routine Makes Years Feel Shorter
Routine plays an important role in how people remember time.
When traveling a new route, people notice unfamiliar streets, buildings, and landmarks. After repeating the same journey for months, however, much of it becomes automatic, and recalling the details of any individual trip becomes difficult.
This automatic processing conserves mental energy, but it also reduces the number of unique memories the brain creates. As similar days accumulate, entire weeks may later feel as though they blended into one another.
Some researchers have proposed the proportional theory of time perception, arguing that one year represents a much larger proportion of life for a five-year-old than it does for a fifty-year-old. Although this explanation is widely discussed, scientists emphasize that it is unlikely to account for the phenomenon on its own. Instead, they believe age, memory formation, routine, emotional experiences, and changing life perspectives all interact to shape how quickly life seems to pass.
Smartphones May Reduce Memorable Experiences
Modern technology may also influence how people experience time.
A 2020 study published in PLOS One examined 119 university students performing memory tasks with either their smartphone nearby or removed from sight. Participants whose phones were absent performed better on memory tests.
The researchers also found that the more often participants thought about their phones during the experiment, the poorer their memory performance became. The findings suggest that even a silent smartphone can divert mental resources away from fully processing ongoing experiences.
Although this does not mean smartphones literally make time pass faster, fragmented attention may reduce the number of memorable experiences stored throughout the day. Hours spent passively scrolling through similar online content may leave relatively few lasting memories, making entire days feel less distinctive when recalled.
Can We Make Life Feel Longer?
While no one can slow the passage of objective time, psychologists believe people can influence how full and memorable their lives feel.
Rather than seeking constant excitement, experts recommend intentionally introducing small amounts of novelty into everyday routines. Taking a different route to work, learning a new hobby, exploring unfamiliar parts of one’s city, cooking new recipes, or reconnecting with old friends can all create fresh memories that make longer periods of life feel richer in retrospect.
Mindfulness may also help. Paying close attention to ordinary experiences—whether walking, eating, or having a conversation—reduces the tendency to operate on autopilot. Over time, accumulating many distinct, consciously experienced moments may lessen the feeling that months and years are disappearing unnoticed.
