LTM

Introduction to Memory Construction

  • Memory is not a direct recording of events; it is constructed each time we recall it.

  • When recalling memories, we use core elements from the memory, supplemented with other knowledge.

  • This construction allows us to fill in gaps but can also lead to errors in memory.

Memory Recall Sensation

  • Reflecting on a specific memory, such as a birthday, can feel like watching a video replay.

    • Example: Recalling a birthday can include imagined details about the event, like decorations and cake.

  • Memories are often filled with details associated with the context, even if they were not explicitly recorded.

    • Example: Recollections of parties often include elements like balloons and streamers, even if they weren't present.

Advantages and Disadvantages of Memory Construction

  • Advantages:

    • Save cognitive space by focusing on significant details.

  • Disadvantages:

    • Potential for false memories; added details may not reflect actual events.

    • Misattribution of the source of information may occur when recalling factual details.

Types of Memory: Flashbulb Memories

  • Flashbulb Memories: Highly detailed memories associated with emotional and significant events.

    • Examples include major historical events such as 9/11, significant personal events, or national tragedies.

  • Participants were encouraged to recall personal flashbulb memories, leading to recognition of emotional recall.

    • E.g., reactions during school announcements about lockdowns or historical events.

Study on Flashbulb Memories

  • A 2003 study compared details of flashbulb memories with everyday memories.

    • Findings indicated:

    • Flashbulb memory details decline over time similarly to regular memories.

    • Confidence in flashbulb memories remains high despite detail decay, leading to potential inaccuracies.

  • Example from a participant recalling a math class during a significant event.

Memory Construction Errors

  • Memory construction may create vivid yet faulty recollections.

  • Study by Jacobi and colleagues: Examined how familiarity leads to misattributing non-famous names as famous:

    • Participants rated names as famous if they felt familiar, wrongly attributing their memory source.

The Role of Schemas in Memory

  • Schemas: Frameworks of knowledge that help us organize and interpret information.

    • When presented with an idea, schemas fill in expected details about common situations or objects.

  • Scripts: Subtype of schema focusing on the sequence of events during an activity.

    • Example: Eating at a restaurant follows a predictable pattern (greeting, ordering food).

Experiment Illustrating Schema Effects

  • Experiment by Brewer and Treyens involved participants recalling items in an office.

    • People included expected items while omitting unexpected details, demonstrating schema influence on memory recall.

Creating False Memories

  • Study by Hyman and coworkers: Inserted a fake memory (lost at an amusement park) among real memories discussed by parents:

    • After initial doubt, approximately one-third of participants created false memories about the fabricated event.

Implications for Eyewitness Testimony

  • Eyewitness testimony is prone to inaccuracies due to memory reconstruction.

    • Elizabeth Loftus' work on the misinformation effect shows how new information can alter memories of an event.

    • Example: Accident studies where witnesses report details inaccurately due to post-event misinformation.

Key Findings from Eyewitness Memory Studies

  • Witnesses may confuse what they heard after the event with what they actually saw, like confusing stop signs with yield signs based on post-event information.

  • Variations in questioning can elicit different responses:

    • Participants who heard the word 'smashed' reported higher speed estimates and more severe accidents compared to those who heard 'hit.'

Improving Eyewitness Testimony Accuracy

  • Recommendations to enhance eyewitness reliability include:

    • Informing witnesses that the suspect may not be present in lineups.

    • Implementing sequential presentation of suspects

    • Employing cognitive interviews to minimize misleading information.

Conclusion

  • Memory is a constructive process influenced by prior knowledge, emotions, and external information.

  • Understanding the dynamics of memory construction is essential for various fields, including law and psychology.

  • Importance of accurate memory retrieval in judicial processes due to the significant reliance on eyewitness testimony.