A 2-year-old remembers very well
A 1-year-old recognizes someone she saw a week ago. A 2-year-old can tell you a month later what happened at the zoo. Memory works in these years - adults just retain almost nothing from it: most people date their first memory to around age 3.
And the boundary shifts. Children were asked about events that happened when they were around 3, then asked about the same stories later. At 5-7, they remembered most of them; at 8-9, only about a third. So the memories did not "fail to form" - they were there and disappeared.
- 3 yearsThe event happens, and the child can talk about it
- 5-7 yearsRemembers most of the same stories, with details
- 8-9 yearsAbout a third remain
- AdultsFirst memory is, on average, around age 3
Why only fragments remain
An episode is assembled from parts: the place, sequence, who was where, how it ended. The hippocampus puts it together, and in the first years it is still developing. One hypothesis is that the rapid growth of new neurons also gets in the way: new cells join old circuits and disrupt the traces stored there. This has been shown in rodents, but not directly in humans.
The other half is having nothing to retrieve them with. Words and a sense of "first - then" arrive later than the events themselves: an early episode is recorded without that framework, so an adult key does not fit. What survives does so in pieces: a pattern on the carpet, the smell of the stairwell, light in a room.
Then the fragment grows around itself. Family stories and photos add details, and the brain does not label where each piece came from, so someone else's story becomes "my memory." That is why vividness and confidence prove nothing.
This many adults in a large survey dated their first memory to age 2 or earlier - an age from which coherent episodes are almost unheard of
The boundary is flexible for another reason, too. People whose families talked with them a lot and in detail about the past in childhood have an earlier first memory on average: conversation gives an episode its storyline.
That is also why countries differ: adults in China date their first memory, on average, about half a year later than adults in the US. Not because their memory is worse - there were simply fewer detailed conversations at home about the child's past.
- Ask older relatives about what photos do not show: smells, sounds, the order of the day
- Keep a fragment as a fragment - an image and a feeling, without a built-out story
- Talk through your child's day in detail, with questions
- Do not judge a memory by its vividness or your confidence - neither tells you its source
- Do not retell a photo as a memory
- Do not read the blank space before age 3 as a sign of something bad
Why do early memories often remain only as fragments?
Why is a vivid memory not always accurate?
Sources
- Bauer and Larkina, "Memory" (2014) - how early childhood events are forgotten between ages 5 and 9
- Akhtar et al., "Fictional first memories," Psychological Science (2018) - dating first memories in a survey
- the neurogenesis hypothesis of childhood amnesia - work by Josselyn and Frankland, mostly in rodents
- cultural differences - research by Qi Wang
Next in the “Childhood” series
3 articles in full on the site, 3 more in the app
