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how is memory defined?
encoding, storage, and retrieval
memory degeneration
alzheimer’s begins as difficulty remembering new info → inability to do everyday tasks
how is memory measured?
recall, recognition and relearning
recall
retrieving info not currently in conscious awareness but learned at earlier time
recognition
identifying items previously learned
relearning
learning something more quickly when you learn it a second or later time
recall can be measured by
fill in teh blank question, short answer, or essay prompt
recognition can be measured by
multiple choice or matching
relearning can be measured by
studying for a final exam over entire year’s course content
What did Ebbinghaus do?
Randomly selected sample of syllables and practiced, then tested—forgot but not entirely. Speed of relearning is one measure of memory retention
What is parallel processing?
Considering many aspects of a problem simultaneously; natural mode of info processing for many functions
Atkinson and Shiffrin did what?
3 stage model of memory: sensory memory, short-term memory, and long-term memory
What is sensory memory?
immediate, very brief recording of sensory info in memory system
What is short-term memory?
memory that holds a few items briefly before information is stored or forgotten
What is long-term memory?
relatively permanent and limitless storehouse of the memory system
What are some other ways long term memories form?
Slipping into long term with backdoor, without consciously attending to it (automatic processing)
a lot of such happens in short-term memory that many prefer the term working memory
What is working memory?
newer understanding of short term memory that adds conscious active processing of incoming auditory and visual info and of info retrieved from long-term memory
What is Baddeley’s model of working memory?
Visual-spatial and auditory rehearsal of new info
hypothetical central executive (manager) focuses our attention and pulls info from long-term memory to help make sense of new info
What is the role of the central executive within Baddeley’s ideas?
To coordinate focused processing without which, information often fades
Essentially focuses attention to stop it from fading
What are explicit memories? (and what is the other term for it)
Retention of facts and experiences from long-term memory that one can consciously know and declare
Also called declarative memory
What are implicit memories? (and what is the other term for it)
Retention of learned skills or classically conditioned associations in long-term memory independent of conscious recollection
Also called nondeclarative memory
How do explicit and implicit memories differ?
We encode explicit memories through conscious effortful processing; encoding that requires attention and conscious effort whereas implicit memory relies on automatic processing or unconscious encoding of incidental information such as space, time, and frequency
What is George Sperling’s sensory memory experiment?
Flashed a group of letters for a 20th of a second and when they recalled a row, it was near perfect but not when it was the whole.
What is iconic memory?
A fleeting sensory memory of visual stimuli, as shown by Sperling’s experiment.
What is echoic memory?
Auditory echoes linger for very short periods of time, and we can recall them very well
What is our short-term memory capacity?
Miller proposed we can hold 5-9 pieces of info
How fast do short-term memories disappear and who made it?
Peterson and Peterson asked subjects to remember 3 consonant groups — related time with longer time meaning less retention for short term (graph!!)
What is shallow processing?
Encoding on a basic level, based on the structure or appearance of words
What is deep processing?
Encoding semantically based on the meaning of the words, tends to yield the best retention
capacity if long term memory
essentially limitless
How is memory stored? (Lashley)
Partial memory no matter which part of brain taken out—distributes components out
Explicit memories are either
semantic or episodic
facts and gen knowledge
episodic is experienced events
explicit memories processed in
hippocampus, fed to other regions for storage
3 Subregions of hippocampus
One active as learning social info
One active as memory engage in spatial mnemonics
One active (rear) processing spatial memory and growing bigger as london cabbies navigate maze of streets
Are memories permanently stored in hippocampus
no, loading dock—memory consolidation
Why did the old lady not shake hands?
implicit long term memory, remembered bad result (conditioned) despite not being able to explicitly recall why
cerebellum in term if memory
processing sensory input, coordinating movement output and balance and enabling nonverbal learning and memory
role in implicit memories
What goes away with a damaged cerebellum?
Ability to form implicit memories/certain conditioned reflexes
Infantile amnesia
first 4 years consciously not remembered
influences for infantile amnesia
index most of explicit memory with command if language children dont have—hippocampus one of last brain structures to mature and as it does more is retained
what role amygdala plays in memory processing?
Stress provokes amygdala to initiate a memory trace boosting activity in brains memory forming areas
evenrs triggering emotional events are
flashbulb memory
Increased efficiency of potential neural firing is called
long term potentiation or LTP and provides neural basis for learning and remembering associations
What is LTP?
long term potentiation
increasing in cells firing potential after brief rapid stimulation—neural basis for learning and memory
What are retrieval cues?
Encoding and remembering bits of situation of the time, retrieval cues that help to later access info
What are the best retrieval cues?
Associations formed at time we encode, smells tastes and sights—mentally place selves in original context
perceptual set versus priming
percep set is tendency to notice some aspects of SENSORY data
priming is implicit memory effect in which EXPOSURE influences later response
Priming example with rabbit
after seeing rabbit, more likely to hear hare over hair
What is encoding specificity principle?
Idea that cues and contexts specific to a particular memory are most effective in helping us recall it
What is state dependent memory?
If we learn in one physiological state, more easily recalled in that state
What is mood congruent memory?
Tendency to recall experiences that are consistent with one’s current good or bad emotional state (mood)
Mood congryency impact duration of moods?
Mood effects on retrieval help ezplain why moods persist, we remember sad when sad happy when happy
Serial position effect?
remember first and last best
Why does serial position effect work?
echoic or still in working memory and rehearsal of first
Two types if forgetting
Anterograde amnesia: inability to form new memories due to injury or illness
Retrograde amnesia: inability of retrieval of info because of injury or illness
Memory can occur at
any memory stage, encoding storage or retrieval
Why do we forget?
encoding failure, storage decay, or retrieval failure
Ebbinghaus storage decay?
Memory for novel info fades quickly then levels out
What is retrieval failure?
Long term memory not regearsed or important cannot be retrieved
Two factors influencing memory retrieval errors?
Proactive interference, forward acting of old on new
Retroactive interference, backward acting of new on recall of old
What us motivated forgetting?
Frued idea we repress to forget
What did Mckinnon show?
Trauma makes vivid, not repressed
What is reconsolidation?
Previously stored altered before being stored again
How does imagination impscy memmory?
Imaginining repeatedly creates false memories
what is source amnesia?
Faulty memorily for how when or where infor learned or imagined
How do prototypes affect illness?
When symptoms dont fit disease prototypes, slow to perceive illness
convergent v divergent thinking
convergent is narrowing to determine single best, divergent is outside the box—creative
Sternberg 5 components
Expertise, imaginative thinking, venturesome personality, intrinsic motivation, creative environment
algorithm vs heuristic
algorithm slower more accurate, heuristic is expediency
What happens in brain during insight?
burst of acitivty in right temporal lobe just above the ear
confirmation bias:
tendency to search for info supporting precinceptions and to ignore or distort contradictory evidence
what is fixation/functional fixedness
inability to see problem from new perspective, obstacle to problem solving
what is a mental set?
tendency to approach problem with mindset worked preciously, mental set what we THINK!!
what is intuition
effortless immediate automatic feeling contrasting with explicit conscious reasoning
twi intuitive mental shortcuts
representative heuristic vs availability heuristic
representative estimating likelihood of events in terms of how well they represent prototypes—lead to ignore other relevant info
availability heuristic
estimating likelihood based on availability in memory, instances coming readily we presume are common
How does availiability heuristic help recall?
more able to visualize remember more
What is the planning fallacy?
Overconfidence leads to planning fallacy, overestimating leisure time and income
What is belief perseverence
clinging to ones initial conceptions after basis on which they were formed and discredited
Syntax versus semantics
syntax structure semantics meaning
phoneme
smallest sound unit
morpheme
smallest unit with meaning
Noam Chomsky
language is unlearned human trait, separate from other parts of cognition
what is universal grammar
predisposed desire to learn grammar rules, noam chomsky
what is receptive language
ability to understand its said about them, take in but not say
how does millers magic number relate to cell phone
10 digit doesnt help
18 months of age
two word stage
Telegraphic speech
two word stage produces sentences hsing noun and verbs