Emotion language use in narratives of the 9/11 attacks predicts long-term memory

Area of Science:

• Cognitive Neuroscience
• Psychology
• Memory Studies

Background:

• Emotions impact memory encoding and consolidation, yet self-reported emotions post-trauma haven't consistently predicted long-term memory.
• Previous research has not established a clear link between immediate emotional self-reports and enduring memory of traumatic events.
• The predictive power of linguistic emotional expression on memory over extended periods requires further investigation.

Purpose of the Study:

• To investigate if emotional language use in written narratives predicts memory over time following a traumatic event.
• To analyze the relationship between linguistic features of narratives and event memory accuracy, flashbulb memory consistency, and emotion memory consistency.
• To determine if written language can serve as an early indicator of long-term memory performance after trauma.

Main Methods:

• Secondary analysis of a longitudinal study involving 691 participants recalling the September 11, 2001 terrorist attacks.
• Participants wrote narratives within two weeks of the attacks; language features were extracted using the Linguistic Inquiry Word Count (LIWC) program.
• Memory outcomes (event accuracy, flashbulb consistency, emotion consistency) were assessed at baseline, 1, 3, and 10 years post-event.

Main Results:

• Increased use of negative emotion words in narratives predicted better event memory accuracy at 3 and 10 years post-event.
• Greater negative emotion word usage also predicted worse flashbulb memory consistency at the 10-year mark.
• Emotion word usage did not significantly predict emotion memory consistency over time.

Conclusions:

• Written emotional language, particularly negative emotion words, can be a significant predictor of long-term memory accuracy and flashbulb memory consistency.
• Linguistic analysis of early written narratives may offer a valuable tool for identifying individuals with potentially enduring memory characteristics post-trauma.
• Findings highlight the utility of analyzing written expression for understanding the long-term impact of traumatic events on memory.