Why we remember more from young adulthood than from any other period

Autobiographical memory is an interesting memory domain, given its inextricable association with identity. One particularly fascinating aspect of it is its unevenness - why do we remember so little from the first years of life ('childhood amnesia'), why do we remember some periods of our life so much more vividly than others? There are obvious answers (well, nothing interesting happened in those other times), but the obvious is not always correct. Intriguing, then, to read about a new study that links those memorable periods to self-identity. (Is that part of why little children remember so little? because their self is so undeveloped?)

Katy Waldman at Slate:

… a team of scientists from England’s University of Leeds devised a clever experiment. Noting that developmental psychologists have isolated the second and third decades as times of identity formation, they gathered a group of volunteers and tried to map the emergence of their self-perceptions. Participants were asked to complete 20 “I am” statements (e.g., “I am quick-tempered”; “I am a mother”). Then they were instructed to pick three statements and come up with 10 memories that seemed relevant to each. Finally, the volunteers were told to pinpoint as best they could the ages at which their three personality traits surfaced. If it’s true that we remember more assiduously during bursts of self-making—and that these self-making periods tend to span our late teens and early 20s—a few things should happen, the researchers reasoned. First, participants should frequently date the unfurling of their “I am” statements to young adulthood. Second, the memories they summoned to support each “I am” statement should constellate around the age at which they believed the “I am” statement started to apply.

That was exactly what transpired. A majority of the memories associated with a particular self-image came from the very same year that the self-image developed. It seemed clear that the more salient a past experience was to your identity, the more luminous it grew in your memory. And what turned out to be the median age at which all these traits and self-concepts were acquired? 22.9.

Slate article

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