Chapter 6: Memory Processes

Question 1

Levels of Processing Theory

Answer 1

Memory thought to depend on initial encoding of info to be remembered
Does not suggest there are different memory stores
Focuses on different kinds of cognitive processing that people perform when they encode and retrieve information

Question 2

Levels of Processing: Retention & Coding

Answer 2

Processing done at a shallow level does not lead to good retention
Deeper (meaningful or semantic) processing improve retention
Improvement in memory comes from greater depth of analysis of material

Question 3

Levels of Processing Memory Test

Answer 3

During study session each word was preceded by a question that participants had to answer as quickly as possible, surprise test
Physical processing: asked whether the word was printed in capital letters
Acoustic processing: asked if target word rhymes with another word
Semantic processing: asked if the word fit into a particular sentence
On surprise memory test semantic processing led to best memory results, followed by acoustic processing

Question 4

Critiques of Level of Processing Theory

Answer 4

Without more precise and independent definition of depth of processing the theory’s usefulness is limited
In certain conditions there is greater recall of info processed acoustically over semantically
Modal view can explain some of the typical levels of processing findings

Question 5

Schemata

Answer 5

Frameworks for organizing information
Memory largely uses world knowledge and schemata

Question 6

Schema

Answer 6

Large unit of organized information used for representing concepts, situations, events, and actions in memory

Question 7

Autobiographical Memory

Answer 7

Memories in everyday life, events that occurred in personal past

Question 8

Autobiographical Memories: Linton

Answer 8

Linton recorded her memories on cue cards and tested herself later about when they happened
Real world memories are much more durable than those of lab experiments
Use markers to help us infer when something happened

Question 9

Autobiographical Memories: Brewer

Answer 9

Participants wore beepers, when they beeped had to record what they were doing at the time
Tested recall of events recorded at end of data acquisition, 21 months later, and 41 months later
Participants recognized more than 60% of events
Memory better for actions than for thoughts, and better for memorable events over the beeper events
Events in unique locations or unique actions were better recalled

Question 10

Flashbulb Memories

Answer 10

Accurate and exceptionally vivid long lasting memory for circumstances surrounding learning about a dramatic event
Parts of brain involved in emotional responses become activated (amygdala)
Cognitive effects of activation result in storage of great deal of information

Question 11

Flashbulb Memories & Retelling

Answer 11

Emotions produced by the event prompt people to retell their own stories in relation to the event
Flashbulb memories are then a result of retellings of stories, and can become distorted over time
Often inaccurate

Question 12

Eyewitness Testimony

Answer 12

Misleading questions can alter memories
Eyewitness testimony is likely to be believed by jurors, especially when offered with high level of confidence
Participants abstract and reorganize information, leading to incorrect recall

Question 13

Repressed Memories

Answer 13

Memories of traumatic events can be buried in unconscious mind for long periods of time

Question 14

Recovered/False Memory Debate

Answer 14

Participants told a concocted story about getting lost in a shopping mall 29% of participants recalled the false memory
Human memories are malleable and open to shaping by questioning or added information
Participants took shorter time to recall true memories
Memory rated as clearer for true memories

Question 15

Amnesia

Answer 15

Profound impairment of LTM
Can result from damage to hippocampal system (includes hippocampus and amygdala) or midline diencephalic region

Question 16

Amnesia Causes

Answer 16

Oxygen deprivation
Blockage of arteries
Herpes
Closed head injury
Alzheimer’s
Korsakoff’s
Tumours
Bilateral electroconvulsive shock treatments

Question 17

Memory Consolidation

Answer 17

Storage of info requires hippocampus to link different aspects of event to retrieve later
Over time the need for hippocampus to retrieve info lessens, accounting for temporal gradients in retrograde amnesia
Blows to head disrupt this process

Question 18

Patient HM

Answer 18

Surgery to remove medial temporal lobe bilaterally, most of hippocampus and amygdala
Suffered from profound amnesia for events after surgery (anterograde) and within a few years before surgery (retrograde)

Question 19

Patient KC

Answer 19

Head injury caused amnesia, almost complete hippocampal loss bilaterally
Anterograde and retrograde amnesia on explicit tests of episodic and autobiographical memory
Semantic memory intact
Lacked episodic memory for entire past
Memories that he did recall had little personal meaning
Retained skills and semantic facts from prior to accident

Question 20

Anterograde Amnesia

Answer 20

Memory deficit extending forward in time from initial point of memory loss

Question 21

5 Features of Anterograde Amnesia

Answer 21

Affects LTM but not working memory
Affects memory regardless of the modality (e.g. visual, auditory, kinesthetic, olfactory, gustatory, tactile)
Spares memory for general knowledge but impairs recall for new facts and events
Spares skilled performance (e.g. skilled musicians may retain abilities even with amnesia)
Hyperspecific memory when learning a new skill (e.g. can only express learning in a context similar to conditions of encoding)

Question 22

Retrograde Amnesia

Answer 22

Loss of memory for information acquired and stored before onset of amnesia
All amnesic patients show at least some retrograde amnesia (sometimes only minutes or hours before injury)

Question 23

4 Features of Retrograde Amnesia

Answer 23

Temporal extent can vary (time span for which memory is lost)
Episodic memories that are compromised
Spares information that was overlearned before onset
Does not affect skill learning (even if can’t remember having practiced the skill)

Question 24

Retrograde Amnesia Temporal Extent

Answer 24

Korsakoff, Alzheimer, Parkinson, or Huntigton diseases likely to exhibit temporally extensive amnesia (several decades)
Other patients suffering head injuries show temporally limited amnesia (losing months or weeks before injury)
In many cases patient can recover some or all lost memories

Question 25

Retrograde Amnesia: Overlearned Info

Answer 25

People with Korsakoff, anoxia, encephalitis have intact knowledge about the world, preserved language, perceptual, and social skills, as well as general intelligence Only extensive retrograde amnesia (progressive dementia, Alzeimer/Huntington) impairs this info

Question 26

Cognitive Economy

Answer 26

Properties and facts are stored at the highest level possible Reduce redundancy E.g. ‘has a liver’ stored under all mammals instead of individually under each type of animal

Question 27

Semantic Network

Answer 27

Collection of nodes associated with all words and concepts one knows about Participants took less time to respond to sentences whose representations should span two levels (e.g. a canary is a bird) than they did to sentences whose representations should span three levels (E.g. a canary is an animal)

Question 28

Lexical Decision

Answer 28

Participants see series of letter strings, asked to decide if they form real words Saw two words one above the other, had to decide if both formed real words If one word was real, participants were faster to respond if other string was a semantically associated word (e.g. butter) than for unrelated words (e.g. chair) or nonwords (e.g. rencle)

Question 29

Spreading Activation Theory

Answer 29

Excitation spreads along connections of nodes in a semantic network No hierarchy Concepts represented in web like fashion Concept = one node

Question 30

Back Propagation

Answer 30

Connectionist networks are taught to develop patterns of activation through trials Initially connections between units have weights set at random and neutral levels

Question 31

Explicit Memories

Answer 31

Consciously recollected, aware of recall, may be deliberate

Question 32

Implicit Memories

Answer 32

Memory that is not deliberate or conscious, but shows evidence of prior learning and storage

Question 33

Semantic Priming

Answer 33

Facilitation of cognitive processing of info after a recent exposure to that same info

Question 34

Repetition Priming

Answer 34

Facilitation of cognitive processing of info after a recent exposure to that same info

Question 35

Word Stem Completion Task

Answer 35

Participants given brief millisecond exposure to word button, soon after given a new word completion task (_u_to_) Increased responding button Nonwords typically show no or little repetition priming relative to real words Priming is greater for words that share the same morphology (roots of meaning)

Question 36

Amnesia & Implicit Memory

Answer 36

Amnesic and non amnesic participants perform comparably on implicit memory tasks

Question 37

Implicit Memory Explanations

Answer 37

Two memory systems: Explicit memory tasks rely on declarative memory and implicit memory tasks rely on procedural memory Two kinds of memory tasks require different cognitive procedures: Implicit memory tasks require perceptual processing, while explicit memory tasks require conceptual processing

Question 38

Process Dissociation Framework

Answer 38

Implicit memory tasks are not pure measures of any memory system Any task relies on combination of abilities

Question 39

False Fame Experiment

Answer 39

Participants shown a list of names, none of whom were famous Some participants asked to study this list with full attention, others in a divided attention task Later participants given new list which do include names of famous people, names from previously studied list, names never before seen were non famous Asked to judge the fame of each name on the list Participants in divided attention more likely to falsely attribute fame to names previously studied Participants in full attention condition new names from list where non famous and had better recollection of what names had been studied Participants in divided attention unable to consciously elaborate and learn list of names well, did not have clear memories for names Sense of familiarity with the same caused them to judge the name as a famous person

Question 40

Reconstructive Memory

Answer 40

Present people with word list with conceptually related words People recognize related words that weren’t on the list, say that they were E.g. words glass, door, screen, view, shutter, curtain, etc. (participants recall window even if not said)

Question 41

Amnesia: Semantic Memory

Answer 41

Issues with episodic memory being lost but retained semantic E.g. Gene

Question 42

Encephalitis & Memory

Answer 42

Damage to front temporal lobes Lost semantic memory Retaining episodic memory

Question 43

Problems With Semantic Network/Cognitive Economy

Answer 43

Typicality effect: people respond to robin is bird than turkey is bird even though they span the same distance on the network