EWT Q Flashcards
(10 cards)
structure
intro
para 1 - emotional arousal and attention
para 2 - flashbulb memories and confidence
para 3 - memory distortion and false memory
para 4 - implications
conclusion
Introduction
- EWT have a crucial role in criminal investigations and serve a very important purpose
- Violent crimes elicit strong emotional reactions such as fear, stress, shock which could affect memory
- Explore how emotional arousal, attention and memory distortions influence EWT with support from psych theory and research
Para 1 - emotional arousal and hypothesis
- Easterbrook (1959) hypothesis
o Emotion narrows attention, central info remembered, peripheral forgotten - Cristianson (1992)
o Attention for non central details often poor in emotional contexts
o Late conceptual processing - rehearsal of central info only - Loftus and burns (1982)
o Ppts in violent conditions forget contextual details - due to emotional trauma
significant difference to nonviolent group - Valentine and Mesout 2009
o High anxiety associated with reduced accuracy in identifying perpetrator in a realistic setting
Valentine & Mesout 2009 crit ev
Strengths
* High ecological validity, in a naturally stressful environment, London dungeons
Limitations
* Sample was selected by researchers, may introduce researcher bias
* Hard to control stress levels precisely, questions internal validity
Offers realistic insight but replication in controlled environment needed
para 2 - flashbulb memories
- Brown & Kulik (1977) Flashbulb memory hypothesis
o People form vivid, detailed memories during emotional events, ASSUMED to be accurate - Talarico & Rubin (2003)
o Memories are vivid and confidently held, but consistency decreased over time - looks at 911 and everyday memories
- tested 1, 6 and 32 weeks later
- Winograd & Neisser (1992)
o Looked at real life trauma, challenger explosion
o Memory distortion was common, ppts later recollections differed significantly from original accounts
o Ppts were highly confident in accuracy of later memories
o Flashbulb mems not immune to forgetting or reconstruction - Kesinger et al 2006
o Emotional content boosts memory for details but not for contextual info - Evaluation
o Flashbulb memories can mislead police if not as accurate as believed
o Confidence does not mean accuracy, important for evaluating testimony reliability
Talarico and Rubin 2003 crit ev
Strengths
* Longitudinal study helps to establish cause and effect comparing the different types of memory
o Reduces recall bias and increases internal validity
* Directly compared flashbulb to everyday memories with same retention intervals
Limitations
* Relies on self-reported memories
* Unable to check accuracy of memories externally as self-reported memories
Compellingly challenges assumption emotional memories are more accurate – high confidence is misleading
para 3 - memory distortion and false memory
Misinformation Effect (Loftus), Source Monitoring Error
* Memories are malleable and susceptible to suggestion or confusion between sources
- Laney & Loftus (2008): People can be led to recall emotional events that never occurred.
o Strengths
High control over experimental conditions, allows for replicable findings
o Limitations
Low stake implanted memories, difficult to generalise to high emotion, high stake events - Kaplan et al (2016)
- strong evidence that emotion, especially arousal, increases false memory susceptibility
- likely due to enhance gist processing and impaired detail encoding
- restricted generalisability due to reliance on DRM paradigm
Evaluation:
* Suggestibility is high in stressful contexts — important for police not to ask leading questions.
* Real-world implications: innocent people may be misidentified due to confident but inaccurate memories.
para 4 - Implications
- Avoid leading q’s (Loftus)
- Be cautious relating confidence to accuracy (Talarico & Rubin)
- Trauma and stress might selectively distort memory (Valentine and musso)
Conclusion
- Reiterate relationship between emotion and memory and its complexities – central details may be remembered well but not always accurately
- EWT confidence may not be reliable indicator of truth
- Police must be aware of these factors
Why confidence and not consistency?
Strong amygdala activity during encoding - key central aspects memory enhanced
This may bias people to believe they are remembering vividly with more accurate detail than they are (Sharot & Phelps, 2004)
Leads them to assume if detailed accurate memory for one component means the same for others