Shocking news preserves confidence, not consistency

The first account

On September 12, 2001, researchers asked Duke University students how they had heard about the attacks. The students recorded details such as where they were, what they were doing, and who told them. They also described an ordinary event from the preceding days.

When the researchers questioned them again after intervals of up to 32 weeks, both memories had changed. Details from the students’ 9/11 accounts were no more consistent than details from their ordinary memories.

Yet the two kinds of memory felt different. The students remained more confident in their 9/11 accounts and rated them as more vivid. That split gave the study its title: “Confidence, not consistency, characterizes flashbulb memories.”

Confidence outlasts consistency

Consistency is not the same as objective accuracy. Researchers usually lack a recording of where someone stood or what another person said. Instead, they compare each later account with the first one.

That means the studies cannot prove that the initial version was correct. But when two accounts conflict, every version cannot be accurate. A changed informant, location, or activity reveals that at least one recollection is wrong.

A larger study followed memories of 9/11 for a decade. Reports changed most during the first year, then became comparatively stable. Confidence in the flashbulb memories remained high throughout the follow-up, according to Hirst and colleagues.

The eventual stability is important. It does not show that memory stopped changing only after reaching the truth. It shows that one version became durable.

Why the scene feels preserved

Roger Brown and James Kulik introduced the term “flashbulb memory” in 1977. Their interviews suggested that consequential, surprising news could leave people with detailed memories of the reception context: place, activity, informant, feelings, and immediate aftermath.

They proposed a special recording process, but later work did not support the idea of a literal mental photograph. A review by William Hirst and Elizabeth Phelps describes flashbulb memories as relying largely on ordinary autobiographical-memory processes, despite their unusual vividness and confidence.

Emotion, personal importance, repeated conversation, and repeated exposure to the story are all associated with these memories. Rehearsal may keep a narrative accessible while also giving later information opportunities to enter it. The evidence does not isolate one mechanism that explains every altered detail.

What the evidence cannot recover

Here the evidence gives way to interpretation. Remembering where you were places a vast public event inside a scene with walls, faces, and an unfinished task. That personal frame may be easier to revisit than the news alone.

But ease of retrieval is not a verification system. Vividness tells you how a memory appears now, not whether every element survived unchanged.

Writing an account immediately can preserve a record for later comparison. It still cannot guarantee that the first account was flawless. Without an outside record, these studies can measure how a memory drifts, but they usually cannot recover which version was true.