Earliest memories have been the topic of scientific research for over a century and seen use as tools of clinical assessment. Still, it remains unclear whether they are in some way distinct or revealing about the person reporting them. This preregistered study examined whether children’s self-reported earliest memories differ from other memories, and how their features link with mood and gender. Urban 9–13-year-old children in Finland (N = 166) reported on their earliest memory and another old autobiographical memory, and mood. Memories were coded for specificity, thematic content, social orientation, and emotional content. No differences between earliest and other memories were noted in specificity, trauma- and accident-related content, or...