Distinctive Memories

Distinctive memories are memories that stand out from the surrounding clutter, and they are easier to find later. Charan Ranganath describes in Why We Remember how directing attention to something specific about a moment, such as the colour of the countertop beside the keys, helps build them.
What it is
Many everyday events resemble one another, and similar memories compete when a person tries to recall one of them. A memory with something unusual attached has fewer rivals, so it is easier to retrieve. Ranganath's examples are ordinary: a bright note among crumpled scraps, or the one birthday party that went differently from the rest.
The practical side is that distinctiveness can be created on purpose. Noticing one specific detail at the time of an event gives the memory a feature that sets it apart.
In effect
In the article on why The Lord of the Rings movies are so good, distinctive memories help explain why certain scenes last. A scene with a recognisable theme attached has a feature that other scenes lack, and when the theme returns elsewhere it works as a cue back to the first. The connection to the films is an interpretation made on this site; the book discusses memory in general.
What it does not say
It does not say that distinctive memories are always accurate, only that they are easier to find. It also does not mean that something has to be dramatic to stand out; in the examples above the distinguishing feature is small. The concept describes memory in everyday life and makes no claim about any film.
Sources
- Ranganath, C., Why We Remember.