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As we entered the new year earlier this month, I remarked to a friend that the years seem to be passing by more quickly as I get older.

Obviously, since time is measured in concrete intervals, every minute, hour, day, month and year occur consistently (we won’t consider leap years in this discussion). Why then does our perception of time differ? Does this perception change primarily due to age, or do other factors also influence how we interpret the passage of time?

Nancy Darling in “Psychology Today” (2010) and Jordan Gaines Lewis “in Scientific American MIND” (2013) presented the following general theories regarding the perception that time flies as we get older:

The passage of time may be interpreted according to experiences and memorable events. As adults, we look back on our experiences as children and teenagers and they stand out in our minds as distinct because they were new to us at the time. So many milestones and highlights occur during these years that it seems to us that these events happened over a longer span of time. In contrast, as adults, our lives generally become more routine. Years may tend to blend together, creating the perception that they have passed by rapidly.

We make comparisons of time based on its proportion to the amount of time we have lived. One year in the life of a child is a significant percentage of their existence, whereas one year in the life of an older adult comprises a much smaller percentage of their lifespan. As a smaller percentage, we also it is judge as being shorter interval.

We have an internal biological clock, which slows down as we age. As we slow down individually, we perceive everything around us (including time) to be moving faster.

At any age, our focus of attention affects how we discern the passage of time. When we are engaged in an activity or concentrating on the daily tasks of life, we are less likely to be aware of external cues in our environment that indicate the passage of time (such as certain sounds or changes in light). Thus, time seems to pass quickly. As older adults, the physical and cognitive changes of aging may influence our awareness of these environmental cues and affect our perception of time, even if our focus on an activity is not as intense.

Their articles also highlighted one of the findings of a couple of studies on this subject. These studies, conducted five years apart and in different countries, used questionnaires that addressed the participants’ general interpretation of the passage of time. Both studies found that the only significant difference between younger participants and older ones was the perception of how quickly the previous 10 years had passed. They found that age did not influence the perception of the speed of the passage of the previous week, month or year.

A more recent but smaller study used a different approach and measured the subjective passage of time in everyday life for two different age groups; taking into account variables such as the general mood of the participants, the amount of attention required by their activities, and the level of difficulty of their activities. These specific variables were found to similarly influence participants’ perception about time for both age groups. But even though age was found not to be a contributing factor, both groups still reported that they felt time was passing more quickly as they aged, in the present as well as overall.

Since various age groups appear to perceive that time is flying by, our attitudes and beliefs about getting older are important to consider, both individually and as a society, since they will influence the setting of values, priorities and goals and how we design and carry out present and future plans. Our mindset about aging also plays a role in how we adapt to the unexpected events of our lives. We’ll spend some time exploring attitudes about aging in future articles.

Learn more about the article’s author, and other community education opportunities, at Check out the book, “Long Term Care Guide: Essential Tools for Solving the Elder Care Puzzle,” at the Whistlestop Bookshop or Amazon, and see Keystone’s free directory of services for older adults at Keystone Elder Law has offices in Mechanicsburg and Carlisle. Call 717-697-3223 for a free telephone consultation.