Photo age: Temporal preferences for external memory across the lifespan

Abstract

Autobiographical memories show a temporal pattern with relatively many events recalled from the recent past (recency) and from adolescence to early adulthood (reminiscence bump), and very few events recalled from the first few years of life (childhood amnesia). The current study examined a temporal pattern for external memory – information stored outside of one’s brain. Three survey studies asked participants to choose which age(s) in their life they would most want to keep photos from, supposing they had many photos from every year. Participants chose 1 year of photos in Study 1, which sampled undergraduates (N = 499, median age = 19), and in Study 2, which sampled online participants using stratified age brackets (N = 252, age range 18–82). Participants chose 3 years of photos in Study 3, which sampled online participants over 40 using stratified age brackets (N = 240, age range 40–93). Participants’ choices largely showed preferences for time periods likely to be well remembered (recency and the reminiscence bump). Qualitative coding of participants’ reasons for their choices showed common themes, such as positive emotions, connections to other people and pets, life milestones, personal growth, and school. Results suggest that in the case of photos, external memory served to mostly enhance or enrich internal memory and less often to compensate for internal memory.