I remember things from before 3. I remember speaking Slovak to my great-grandmother, and how much she complained about her feet, and the taste of zazvorniky she made for me.
I have a brief memory of my great-grandfather’s funeral.
I remember my mother sitting me down in front of the TV for “a new program for kids”-- Sesame Street. I never forgot the story of the human characters, Susan and Gordon on that episode.
My mother backed up my great-grandmother complaining about her feet; my grandmother made zazvorniky at my request when I was a teen, and they looked and tasted just as I had remembered; when my son was 3, I got him DVDs of the first season of Sesame Street, and, in fact, I remembered the story down to some specific details.
I remember making projects in preschool, and a few months ago, I found them in a trunk of my mother’s. I had no idea she’d saved them.
So my very early memories seem to be fairly accurate.
I would say the earliest ones go back to about 2years, 8months.
I was extremely verbal, and at that age, could carry on a conversation with an adult. I was putting 2 & 3 words together in novel utterances before I was a year. My slightly OCD, linguist mother recorded a lot of my early speech, so I know this-- I don’t have any memories from before a year.
I have a Deaf friend who was language-deprived as a child-- she was not allowed ASL until she was nine, and finally declared an “Oral failure.” She says that her memories are fuzzy and unsequenced before she had language.
So maybe language skills facilitate memory.
For the people in the extreme ends-- lots of specific early memories, or none until late elementary school: how verbal were you?