Comprehensive Memory Systems and Processes: Neuropsychology, Encoding, Retrieval, and Errors

Short term memory (STM)

A type of memory that holds active contents for a short duration, typically up to 20-30 seconds, with a small capacity of about 7±2 items, using phonetic coding.

Long term memory (LTM)

A type of memory that stores inactive contents for a long duration (seconds to years) with a large capacity that is essentially limitless, using semantic coding.

Serial position effect

A memory bias where items at the beginning and end of a list are recalled better than those in the middle.

Primacy effect

The tendency to better recall earlier items in a list due to more rehearsals, increasing the likelihood of these items entering long term memory.

Recency effect

The tendency to better recall the last items in a list because they are still active in short term memory.

H.M. (Henry Molaison)

A patient who had a bilateral removal of the hippocampus due to epilepsy, resulting in intact short term memory but inability to commit new information to long term memory post-operation.

Clive Wearing

A patient with viral encephalitis leading to hippocampus damage, who retained intact short term memory and long term memories from the past but could not commit new information to long term memory.

Jimmie G

A patient with Korsakoff's syndrome resulting in hippocampus damage, who had intact short term memory and long term memories from long ago but could not commit new information to long term memory.

Patient K.F.

A patient with parietal lobe damage who had a short term memory capacity of just 2 items and a reduced recency effect, but functioning long term memory.

Population dissociations

A phenomenon where there is no difference between populations on one measure but a difference in another, indicating separate brain systems for short term and long term memory.

Explicit memory

A type of memory that is declarative, conscious, and intentional, requiring deliberate retrieval.

Implicit memory

A type of memory that occurs without explicit awareness or deliberate retrieval, often influencing behavior unconsciously.

Retrograde amnesia

A type of amnesia where a person cannot remember events that occurred prior to brain damage, although general knowledge and distant memories are usually better preserved.

Anterograde amnesia

A type of amnesia where a person cannot remember events that occur after brain damage, often showing vague recollections and some new learning.

Warrington & Weiskrantz study

A study comparing amnesiacs to a control group, showing that amnesiacs performed worse on explicit memory tests but not on implicit memory tests, indicating a population dissociation.

Direct tests (explicit)

Memory tests that refer to past events, require conscious retrieval, and instruct participants to use memory.

Indirect tests (implicit)

Memory tests that do not mention memory and allow participants to perform tasks without awareness, showing how memory influences behavior unconsciously.

Jacoby and Dallas study

A study where participants studied words at different processing levels, showing strong effects in recognition tests but little to no effect in perceptual identification tests, indicating differences between explicit and implicit memory.

Craik & Tulving study

A study where participants judged if a target word fit into a sentence, finding that words in complex sentences were remembered better, highlighting the importance of elaborative coding.

Encoding specificity

The principle that the context in which information is learned can serve as a retrieval cue, enhancing memory recall when the conditions match.

Grant et al. study

A study demonstrating that matching study and testing conditions (quiet vs. noisy) improves recall, supporting the encoding specificity principle.

What is the effect of testing on memory retention?

Testing enhances memory retention more than restudying, as it actively engages the learner and promotes deeper processing.

What did Roediger & Karpicke (2006) find about study-test vs. study-study?

Participants who studied and then took a test (study-test) recalled more information after one week compared to those who studied the material twice (study-study).

What is the mean effect of testing on memory according to Rowland (2014)?

Rowland found that taking a practice test makes individuals 2.5 times more likely to remember information compared to restudying.

What is the difference between massed practice and spaced practice?

Massed practice involves studying in one block of time, while spaced practice spreads studying over multiple sessions, which is more effective for long-term retention.

What is explicit memory?

Explicit memory is the conscious, declarative recollection of facts and events.

What is implicit memory?

Implicit memory is the unconscious influence of prior experiences on behavior and performance.

What is retrograde amnesia?

Retrograde amnesia is the loss of memories formed before a traumatic brain event, with recent memories being more affected than older ones.

What is maintenance rehearsal?

Maintenance rehearsal is the repetitive verbal repetition of information to keep it active in short-term memory.

What is elaborative rehearsal?

Elaborative rehearsal involves linking new information to existing knowledge or personal experiences, supporting deeper encoding and better long-term retention.

What does the Levels of Processing theory propose?

The Levels of Processing theory suggests that deeper semantic processing leads to a higher likelihood of later recall compared to shallow processing.

What is the primary focus of the Systems Approach to memory?

The Systems Approach focuses on distinct memory stores: sensory, short-term, and long-term memory, and supports the existence of separate systems within each store.

What is the significance of retrieval practice?

Retrieval practice enhances learning by requiring active recall, which strengthens memory connections and improves retention.

What did Kornell (2009) find about predictions of learning in massed vs. spaced practice?

Participants predicted they would perform better with massed practice than they actually did, while those using spaced practice underestimated their performance.

What is the impact of drug-induced associations on memory?

Certain drugs, like diazepam, can impair explicit memory while leaving implicit memory largely unaffected.

What is the role of practice tests in learning?

Practice tests not only assess learning but also enhance it by promoting active engagement and elaboration of material.

What is the relationship between rehearsal strategies and long-term memory?

Elaborative rehearsal is more effective for long-term memory retention compared to simple maintenance rehearsal.

What is the benefit of greater delays in recall?

Longer delays in recall can enhance memory retention, as they require more effortful retrieval, leading to better recall.

What did Blaisman find regarding spaced reviews in psychology classes?

Blaisman found that spaced reviews of concepts improved retention compared to a control group with no spaced review.

What is the conclusion regarding the amount of repetition for durable storage?

Simply increasing the amount of repetition is insufficient for durable long-term storage; meaningful engagement is necessary.

What is the implication of testing effects in the classroom?

Testing effects suggest that quizzes can enhance learning and retention, making them a valuable tool in educational settings.

What is the difference between free recall and cued recall?

Free recall involves retrieving information without prompts, while cued recall provides specific cues to aid retrieval, with cued recall generally yielding better results.

What is the self-reference effect?

The phenomenon where personal relevance enhances memory encoding, leading to higher recall.

What is survival processing?

A type of memory processing where individuals rate the usefulness of words for survival, resulting in strong memory performance.

What is retrieval in memory?

The process of pulling stored information back into working memory.

What are retrieval cues?

Elements that trigger the recall of target memories, such as words, context, mood, or sensory input.

What is cue-dependence?

The concept that memory performance varies based on the nature of the retrieval cue presented.

What is free recall?

A memory test where participants list remembered items without any external prompts.

What is cued recall?

A memory test where participants receive specific prompts to aid in retrieving information.

What is the encoding specificity principle?

Memory is optimal when the conditions during encoding closely resemble those during retrieval.

What is the Mantula study's key finding?

Retrieval is significantly better when cues are self-generated, indicating the importance of personal meaning.

What is the effect of context on memory retrieval?

Memory performance can improve when the physical or environmental context during retrieval matches that during encoding.

What is state-dependent retrieval?

The phenomenon where memory recall is enhanced when a person's physiological state at study matches that at test.

What is mood-dependent retrieval?

The concept that matching emotional states during study and test leads to better recall.

What did Craig & Tolving (1975) find about sentence complexity?

Words embedded in complex sentences were remembered significantly better than those in simple sentences.

What is the typical memory outcome of elaborative rehearsal?

High long-term retention.

What is the typical memory outcome of maintenance rehearsal?

Limited to short-term retention.

What does deeper processing lead to in memory performance?

Higher recall rates.

What is the relationship between encoding type and retrieval cue effectiveness?

Highest accuracy occurs when the encoding type matches the retrieval cue.

What is the impact of auditory context on memory retrieval?

Matching ambient sound during study and test enhances recall.

What is the effect of physical context on memory retrieval?

Context-dependent retrieval shows better performance when the study and retrieval environments match.

What is the significance of personal relevance in memory encoding?

Personal relevance greatly boosts encoding, leading to higher memory performance.

What is the role of sensory cues in memory retrieval?

Sensory cues, such as smell or sound, can trigger memories and enhance recall.

What is the staircase pattern observed in memory performance?

Deeper processing leads to higher recall, forming a staircase pattern in memory performance.

What is the finding from the study by Grant et al. regarding noise?

Matching study and test conditions regarding noise leads to better recall.

What is the effect of mood on memory performance?

Matching emotional states during study and test yields the best recall.

What are the practical applications for studying mentioned in the notes?

Pause to explain concepts in your own words, create links to previous knowledge, and practice cued recall.

What is the significance of the 'tip-of-the-tongue' experience?

It illustrates how a single retrieval cue can unlock a memory that is otherwise dormant.

What is autobiographical memory?

The memory that we have for our life story, which involves personal experiences and events.

What is mental time travel?

The ability to mentally relive past experiences, primarily associated with episodic memory.

What is field perspective in memory?

Relooking at memories through one's own eyes, often associated with more recent memories.

What is observer perspective in memory?

Relooking at memories through another person's point of view, allowing one to see themselves in the scene.

What are the components of autobiographical memory?

It is multidimensional, consisting of various spatial, emotional, and sensory elements.

What did Greenberg and Rubin (2003) find regarding brain damage?

They found that damage in visual areas of the brain led to an inability to recognize and visualize objects, resulting in loss of autobiographical memory.

What types of events are most memorable over a lifespan?

Big events and emotional events, such as graduation or having children, tend to stand out the most.

What is the reminiscence bump?

An enhanced memory for events that occur during adolescence and young adulthood.

What is the self-image hypothesis?

The theory that memory is enhanced for events that occur as individuals form their self-image or life identity.

What is the cognitive hypothesis?

The idea that encoding is better during periods of rapid change followed by stability.

What is the cultural life script hypothesis?

The theory that events commonly occurring in a culture are more memorable and align with the reminiscence bump.

What is HSAM (Highly Superior Autobiographical Memory)?

A condition where individuals can recall every day of their lives in detail, typically starting from a young age.

What are the brain structures associated with HSAM?

Individuals with HSAM may have an enlarged temporal lobe and caudate nucleus.

How does emotion affect autobiographical memory?

Emotion adds complexity, often enhancing the recall of pleasant events and central details of negative memories.

What is tunnel memory?

A phenomenon where individuals focus on the most central details of emotional memories, often at the expense of peripheral details.

What did Heuer and Reisberg (1990) demonstrate about emotional memory?

Participants had better memory for central details in emotional stories compared to boring ones.

What is the role of the amygdala in memory?

The amygdala plays a key role in processing emotions and enhancing memory during highly emotional experiences.

How do odors affect memory recall?

Odors can elicit strong emotional memories, often related to events from early life.

What is mood congruent memory?

The tendency to recall memories that match one's current mood, such as sad memories when feeling sad.

What are flashbulb memories?

Vivid memories of the circumstances surrounding shocking or significant events, not necessarily based on direct experience.

What did Brown and Kulik (1977) study regarding flashbulb memories?

They examined participants' memories of hearing about significant events, finding them to be vivid and detailed.

What is repeated recall in the context of flashbulb memories?

A technique used to compare a person's memory of an event over time with initial reports collected shortly after the event.

What did Talarico and Rubin (2003) find about flashbulb memories?

They found that while confidence in flashbulb memories remains high, their accuracy decreases over time.

What is the relationship between confidence and accuracy in flashbulb memories?

There is often a disconnect between the subjective confidence in flashbulb memories and their objective accuracy.

What triggers physiological responses related to emotions?

High emotions trigger physiological responses through the amygdala.

What is the narrative rehearsal hypothesis?

The narrative rehearsal hypothesis suggests that repeatedly seeing an event leads us to believe we have a better memory for it.

How is memory characterized?

Memory is characterized as reconstructive, meaning it is constantly changing and building based on our experiences.

What did Roediger and McDermott (1995) study?

They studied how participants recognized words from a list, including lure words that were not actually present.

What were the results of Roediger and McDermott's study?

79% recognized old words, 11% falsely recognized new unrelated words, and 81% falsely recognized lure words.

What are schemas?

Schemas are knowledge structures that represent what is involved in a particular scenario or experience.

What is a script in the context of memory?

A script is a type of schema that outlines a sequence of actions for a specific activity.

What did Brewer and Treyens (1981) find in their office study?

Participants recalled items accurately but also reported items that fit the usual office schema but were not present.