2 PSYCHOLOGY OF MEMORY - TEXTBOOK Flashcards
What is memory?
The ability to store and retrieve information over time
What are the three stages of (‘modal’ model of ) memory?
Sensory, short-term (working), long-term
What is sensory memory?
Where sensory information kept for a few seconds or less
What is short-term memory?
Where nonsensory information kept for up to a minute
What is long-term memory?
Where information can be kept for hours, days, weeks, years
What are the two types of sensory memory?
Iconic and echoic
What is iconic memory?
A fast-decaying store of visual information
How quickly do iconic memories decay?
1 second or less
What is echoic memory?
A fast-decaying store of auditory information
How quickly do echoic memories decay?
Within 5 seconds
How quickly do short-term memories decay without rehearsal?
After 15-20 seconds
What is rehearsal?
Process of keeping information in short-term memory by mentally repeating it
How does rehearsal work?
Each repetition causes information to re-enter stem adding another 15-20 seconds
How many items can short-term memory hold?
7 +/- 2 meaningful items
How can we trick the short-term memory into holding more?
Chunking
What is chunking?
Combining small pieces of information into larger chunks that are more easily held by the STM
What is working memory?
Active maintenance and manipulation in short-term storage
What does the working memory include?
2 subsystems managed by the central executive and the temporary episodic buffer
What part of working memory briefly stores visual and spatial information?
Visuospatial sketchpad
What part of working memory briefly encodes mental representations of sounds?
Phonological loop
What is the phonological loop made up of?
Short term store and an articulatory rehearsal system
What part of working memory coordinates and controls plans of action and output?
Central executive attentional system
What part of working memory connects short and long term memory?
Episodic buffer
What is interference in terms of working memory subsystems?
When two separate tasks tap into the same subsystem
What is the result of interference?
Drop in accuracy and response time
In what two ways is long term memory distinct from short term?
Duration and capacity
What is the capacity limit of long term memory?
None - that we know of
What is consolidation?
The process whereby information must pass from STM into LTM in order for it to be remembered
What is anterograde amnesia?
No memory forward (inability to transfer new information from STM to LTM)
What is retrograde amnesia?
No memories backward (inability to retrieve information that was acquired before a certain date)
What was the effect on HM’s memory when the hippocampus was removed?
Anterograde amnesia
What are the three essential processes in remembering?
Encoding, storage, retrieval
What is encoding?
Process by which we transform perceptions, thoughts and feelings into enduring memory
What is storage?
Process of maintaining information in memory over time
What is retrieval?
Process of bringing to mind previously encoded and stored information
What is the most common misconception of memory?
Memory is a recording device like a camera - it is NOT; memories are constructed
What are schemas?
Mental models of the world
How do schemas aid encoding?
Contain knowledge that helps to encode new information into a meaningful context
What is the issue with schemas and encoding?
Schemas can cause distortion of actual memory to fit with a sensical one
What is elaborative encoding?
Process of actively relating new information to knowledge already held in memory
What is the effect of elaborative encoding?
Enhanced subsequent retention
What two parts of the brain are associated with elaborative encoding?
Inner left temporal lobe, lower left frontal lobe
What is visual imagery encoding?
Process of storing new information by converting it into mental pictures
What is the method of loci?
Memory aid that associates information with mental locations
Why is visual imagery encoding effective?
Results in both verbal and visual placeholders
What is organizational encoding?
The act of categorizing information by noticing relationships between a series of items
What is a mnemonic?
A device for reorganizing information into more meaningful patterns to remember
What is long term potentiation (LTP)?
Enhanced neural processing that results from the strengthening of synaptic connections