Why Summers Felt Endless When You Were a Kid

A summer at age nine can feel longer than a whole year at forty, and the reason has almost nothing to do with the clock. Your seconds have not gotten shorter. What changed is how much your brain bothers to keep. The first explanation dates to 1877, when French philosopher Paul Janet argued that a year feels smaller the more of life you have already lived. It is tidy and widely repeated, and it cannot explain why a first month in a new country crawls at forty. The better answer runs through 140 years of research: William James's 1890 account of routine, the repetition experiments from David Eagleman's lab at Baylor College of Medicine, David Rubin's 1986 work on the reminiscence bump, and Marc Wittmann and Sandra Lehnhoff's 2005 study of people aged 14 to 94. All of them point the same way. Time speeds up in how you look back on it, and the speed-up follows how many new memories you made. What this covers: The 1877 math that says a year gets smaller as you age, and the problem with it Why a week of holiday flies by and then feels enormous, and why a dull week does the opposite What William James wrote in 1890 about routine and memory The 2007 experiment where volunteers were dropped backwards from a tall tower into a net Why their own fall felt about a third longer, and why they still could not read the numbers on their wrists How your brain files the hundredth walk to school under one label The reminiscence bump, and why memories crowd between ages 10 and 30 The 2005 study where short stretches felt the same at every age, but the last ten years flew for older people The one thing researchers still argue about: memory versus the body's internal clock What actually makes a week feel longer, and why it is not a better schedule Everything you remember about your life was recorded by a brain that only keeps what is new. The days that copy each other fold into one. Your childhood summers were not longer. They were fuller. ━━━━━━━━━━━━━━━━━━━━ ❤️ If this made you stop and think, a like helps more than you know. If not, no problem. I will see you in the next one. Mind Detour ━━━━━━━━━━━━━━━━━━━━ S O U R C E S ━━━━━━━━━━━━━━━━━━━━ THE PROPORTIONAL THEORY Janet, P., 1877, "Une illusion d'optique interne," Revue philosophique de la France et de l'étranger. The origin of the idea that a year feels shorter as it becomes a smaller share of your life. ROUTINE AND MEMORY James, W., 1890, The Principles of Psychology, chapter on the perception of time. His account of how routine collapses stretches of life in memory. THE HOLIDAY PARADOX Hammond, C., 2012, Time Warped: Unlocking the Mysteries of Time Perception. The holiday paradox: why trips fly by in the moment and feel long in hindsight. THE TOWER DROP Stetson, C., Fiesta, M. P. and Eagleman, D. M., 2007, "Does time really slow down during a frightening event?", PLoS ONE, 2(12), e1295. Volunteers dropped into a net, the longer-feeling fall, and the wrist display they could not read faster. REPEATED IMAGES Pariyadath, V. and Eagleman, D., 2007, "The effect of predictability on subjective duration," PLoS ONE, 2(11), e1264. Why a repeated image feels shorter than the first one. THE REMINISCENCE BUMP Rubin, D. C., Wetzler, S. E. and Nebes, R. D., 1986, "Autobiographical memory across the lifespan," in Rubin, D. C. (ed.), Autobiographical Memory, Cambridge University Press. Where the crowding of memories between roughly ages 10 and 30 comes from. TIME AND AGE Wittmann, M. and Lehnhoff, S., 2005, "Age effects in perception of time," Psychological Reports, 97(3). Ages 14 to 94, short stretches versus the last ten years. ━━━━━━━━━━━━━━━━━━━━ #psychology #neuroscience #timeperception #memory #science