Eyewitness Testimony Flashcards
(39 cards)
Three stages of memory
Encoding
Storage
Retrieval
Encoding
How information is stored in memory
Not all information is stored
What may affect encoding of memory?
Prior knowledge of the event
Duration of the event
Repetition of the event
Stress (cortisol) level at the time
What is encoding based on?
Limited attentional resources
Storage
Short term memory
Move to long term memory after rehearsal, repetition and surviving intervening experiences
Where do encoded items go?
Short-term memory
What enhances retrieval?
Motivation to recall
Desire to cooperate with questioner
Understanding what is important to recall
What inhibits recall?
Motivation to recall (pressure causes stress)
Desire to cooperate with questioner
Understanding what is important to recall
Until when were children not used as witnesses?
Early 1900s
What is recognition?
The ability to identify, after witnessing an event, or learning a list of items, any details or items that were present during the event or in the list
What is recall?
After witnessing an event, or learning a list of items, a participant is asked to describe the event or list all the study items that he or she can remember
Semantic memory
General knowledge Facts Places Names Words
Episodic memory
Knowledge of personal events
Tulving (1983)
Identified differences between semantic and episodic memory
Retrieval cues are important in retrieval of episodic memory
What is a synergistic ecphory?
When retrieval cues activate a stored memory
Scripts
Generalised event representation
Slot for every expectation
Leads to automatic expectations for slots to be filled when recalling the event
When do we use scripts?
When there is a weak memory trace we use a script as a template
Congruent
If the journey is congruent with your script-based knowledge, you are likely to retrieve it accurately
Mismatch
If there is a mismatch between expectation and actual events, this may be resolved by using the expectation as a guide, preventing accurate recall
Hess (1991)
Scripts develop with age
Young children have scripts for recurring events
____ age children are more vulnerable to the negative effects of script based knowledge than ____ age children
Preschool
Elementary school
____ children are unable to differentiate between a special event and a scripted event
Preschool
As children get older they are able to identify ______
Younger children may incorporate this into their scripts
Special events
As children get older they learn more…
Words
Events
People
Speech