Multi-Store Model of Memory

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Questions and Answers

Which memory store is associated with a capacity of 7 +/- 2 items?

  • Sensory Memory
  • Long-Term Memory
  • Short-Term Memory (correct)
  • Sensory Register

The sensory memory has an unlimited duration.

False (B)

What is the process called that helps maintain information in the short-term memory?

Rehearsal

The ______________ effect refers to the tendency to recall the first items in a list better than those in the middle.

<p>primacy</p> Signup and view all the answers

Match the memory types with their characteristics:

<p>Sensory Memory = Duration lasts milliseconds Short-Term Memory = Capacity of 7 +/- 2 items Long-Term Memory = Unlimited duration and capacity Rehearsal = Maintains information in short-term memory</p> Signup and view all the answers

What type of encoding is primarily used for long-term memory?

<p>Semantic (C)</p> Signup and view all the answers

The echoic register is responsible for processing touch information.

<p>False (B)</p> Signup and view all the answers

Who conducted research that supported the differentiation between short-term and long-term memory?

<p>Glanzer et al</p> Signup and view all the answers

What percentage of true stories were recalled correctly by participants?

<p>68% (D)</p> Signup and view all the answers

False memories cannot be created from suggestions and misleading information.

<p>False (B)</p> Signup and view all the answers

What technique is primarily used by the police to aid eyewitnesses in recalling information?

<p>Cognitive interview</p> Signup and view all the answers

Gabbert et al. (2003) found that a '_______ effect' occurs when co-witnesses reach a consensus view of what they think happened.

<p>conformity</p> Signup and view all the answers

Match the following research studies with their findings:

<p>Gabbert et al. (2003) = Co-witnesses reach consensus views Fisher et al. = Support for cognitive interview Tulving = Beliefs on multiple retrieval paths 29% recall = Percentage of false stories believed true</p> Signup and view all the answers

What is one method mentioned that helps reduce witness anxiety during a cognitive interview?

<p>Allowing time for recall (C)</p> Signup and view all the answers

The cognitive interview technique is based on the idea that multiple retrieval paths exist to retrieve memories.

<p>True (A)</p> Signup and view all the answers

In Fisher et al.'s study, who were the participants interviewed?

<p>Victims of crime or witnesses</p> Signup and view all the answers

Which part of the brain is primarily associated with episodic memory?

<p>Hippocampus (C)</p> Signup and view all the answers

Semantic memory and procedural memory are stored in the same brain region.

<p>False (B)</p> Signup and view all the answers

What type of memory was HM able to form despite his brain damage?

<p>Procedural memory</p> Signup and view all the answers

According to the working memory model, the 'Central Executive' __________ to various tasks.

<p>attends</p> Signup and view all the answers

Match the types of memory to their brain regions:

<p>Episodic Memory = Hippocampus Semantic Memory = Temporal Lobe Procedural Memory = Cerebellum Working Memory = Central Executive</p> Signup and view all the answers

Which component of working memory is responsible for processing speech-based information?

<p>Phonological Loop (B)</p> Signup and view all the answers

The episodic buffer has a separate storage capacity from the Central Executive.

<p>True (A)</p> Signup and view all the answers

What effect does proactive interference have on memory recall?

<p>It interferes with retrieving new memories due to similar past memories.</p> Signup and view all the answers

Memory code decay is often referred to as __________ decay.

<p>trace</p> Signup and view all the answers

Which of the following is NOT a component of the Working Memory Model?

<p>Visual Memory (A)</p> Signup and view all the answers

Courtney could form new episodic memories after her brain surgery, demonstrating that episodic memories can be retained.

<p>False (B)</p> Signup and view all the answers

What is the role of the inner-scribe in the Visuospatial Sketchpad?

<p>It deals with spatial relationships and rehearsal of visual information.</p> Signup and view all the answers

The __________ lobe is primarily connected to semantic memory.

<p>temporal</p> Signup and view all the answers

Match the interference types to their definitions:

<p>Proactive Interference = Old memories interfere with new ones Retroactive Interference = New memories interfere with old ones</p> Signup and view all the answers

What theory explains that new learning replaces the old learning?

<p>Unlearning theory (A)</p> Signup and view all the answers

Retroactive interference occurs when earlier memories disrupt the recall of newer ones.

<p>False (B)</p> Signup and view all the answers

Who identified retroactive interference through a study with syllables?

<p>Muller</p> Signup and view all the answers

Tulving's __________ principle suggests that recall is affected if the context is different from when the memory was encoded.

<p>encoding-specificity</p> Signup and view all the answers

Which type of failure relates to the external environment affecting memory recall?

<p>Context-dependent failure (D)</p> Signup and view all the answers

What is the primary function of the hippocampus in memory processing?

<p>Long-term memory storage (A)</p> Signup and view all the answers

The multi-store memory model suggests that short-term and long-term memory are the same types of memory.

<p>False (B)</p> Signup and view all the answers

State-dependent failure can occur when a person's internal state during recall is different from when the memory was formed.

<p>True (A)</p> Signup and view all the answers

What type of memory is associated with knowing how to perform tasks such as swimming or riding a bike?

<p>procedural memory</p> Signup and view all the answers

What did Abernethy find regarding memory recall in relation to familiar settings?

<p>Participants had greater recall in a familiar setting.</p> Signup and view all the answers

Loftus and Palmer's study demonstrated how __________ questions can influence memory recall.

<p>leading</p> Signup and view all the answers

Episodic memories are often enhanced by strong __________ at the time of coding.

<p>emotions</p> Signup and view all the answers

In Loftus and Palmer's study, which verb resulted in the highest speed estimate?

<p>Smashed (A)</p> Signup and view all the answers

Match the types of long-term memory with their descriptions:

<p>Episodic memory = Memories of personal experiences Semantic memory = Knowledge of facts and concepts Procedural memory = Skills and tasks learned through practice</p> Signup and view all the answers

What brain region is linked primarily to the coding and storage of episodic memories?

<p>Hippocampus (B)</p> Signup and view all the answers

Ceraso suggested that retroactive interference involves actual loss of information.

<p>False (B)</p> Signup and view all the answers

The case study of KF provided evidence for the oversimplification of the multi-store memory model.

<p>True (A)</p> Signup and view all the answers

What does the term 'retrieval failure' refer to?

<p>Failing to access memory due to insufficient cues.</p> Signup and view all the answers

Match the following interference types with their descriptions:

<p>Proactive interference = Old memories disrupt new ones Retroactive interference = New memories disrupt old ones State-dependent failure = Internal state differs during recall Context-dependent failure = External environment differs during recall</p> Signup and view all the answers

What type of memory does the situation 'recalling the capital of France' exemplify?

<p>semantic memory</p> Signup and view all the answers

The phenomenon where discussing an event can alter how it is remembered is known as __________.

<p>memory contamination</p> Signup and view all the answers

The __________ comprises skills and tasks that are performed automatically without conscious thought.

<p>procedural memory</p> Signup and view all the answers

Which type of memory is suggested to move from episodic to semantic over time?

<p>Episodic memory (B)</p> Signup and view all the answers

What did Loftus & Pickrell's study focus on?

<p>Misleading information creating false memories (C)</p> Signup and view all the answers

What is one type of cue-dependent forgetting?

<p>Context-dependent failure or state-dependent failure.</p> Signup and view all the answers

Research consistently supports that long-term memory is a single, unified store.

<p>False (B)</p> Signup and view all the answers

What is the role of the neocortex in relation to procedural memory?

<p>Storage and recall of skills</p> Signup and view all the answers

_________ rehearsal is recognized as one way to transfer memories into long-term storage.

<p>Elaborative</p> Signup and view all the answers

Which of the following is NOT a type of long-term memory as per the discussed models?

<p>Sensory memory (A)</p> Signup and view all the answers

Flashcards

Multi-store memory model

A structural model of memory that proposes three separate stores: Sensory Memory (SM), Short-Term Memory (STM), and Long-Term Memory (LTM). Information flows linearly between these stores.

Sensory Memory (SM)

The initial stage of memory where information is received from the senses. It holds a vast amount of information but only for a few milliseconds unless it receives focused attention.

Sensory Registers (SR)

Specialized components within the sensory memory that process information from each sense: Iconic register (vision), Echoic register (sound), and Haptic register (touch).

Short-Term Memory (STM)

The temporary storage system for information that is actively being used. It has a limited capacity (around 7 items) and a short duration (up to 18 seconds).

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Rehearsal

The process of mentally repeating information to keep it active in the short-term memory. Can be either maintenance or elaborative.

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Long-Term Memory (LTM)

The long-term storage system for information that has been processed and encoded. It has an unlimited capacity and duration.

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Encoding

The process of transferring information from the short-term memory to the long-term memory. It's influenced by the depth and meaningfulness of the processing.

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Retrieval

The process of retrieving information from the long-term memory. It often involves bringing it back through the short-term memory.

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What is short-term memory?

A type of memory that holds information for a short period of time, typically around 18-20 seconds, unless it's rehearsed. Short-term memory has a limited capacity, usually holding around 7 items.

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What is long-term memory?

A type of memory that holds information for a long period of time, potentially indefinitely. Long-term memory has a much greater capacity than short-term memory.

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What is the Multi-Store Memory Model?

This model proposes that information flows through a series of memory stores. It suggests that incoming information first enters the sensory store, then moves to short-term memory if it's attended to, and finally to long-term memory if actively rehearsed.

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What is maintenance rehearsal?

A type of rehearsal that involves simply repeating information over and over again. It's less effective for transferring information to long-term memory compared to elaborative rehearsal.

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What is elaborative rehearsal?

A type of rehearsal that involves connecting new information to existing knowledge and understanding. It's more effective for transferring information to long-term memory compared to maintenance rehearsal.

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What is ecological validity?

This refers to the ability of a research study to be generalised to real-world situations. If a study lacks ecological validity, its findings may not be applicable in real-world settings.

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What is declarative memory?

A type of conscious memory that involves recalling facts, events, and personal experiences. It's further subdivided into episodic and semantic memory.

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What is episodic memory?

A type of declarative memory that holds personal experiences and events, including their context, time, and emotions.

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What is semantic memory?

A type of declarative memory that holds general knowledge, concepts, facts, and meanings. It's built over time through learning and experience.

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What is procedural memory?

A type of unconscious memory that involves recalling procedures, skills, and habits. It's also known as 'knowing how' memory.

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What is the role of the hippocampus in memory?

The hippocampus plays a key role in the consolidation and storage of long-term memories, specifically for declarative memory. It's crucial for forming new memories and transferring them to long-term storage.

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What is the role of the prefrontal cortex in memory?

The prefrontal cortex is involved in various cognitive functions including working memory, decision-making, and planning. It's also thought to play a role in the initial encoding and retrieval of episodic memories.

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What is the Levels of Processing Theory?

This theory proposes that memory strength is influenced by the level of processing that information undergoes. Deep processing, which involves meaningful analysis and connections, leads to stronger and more durable memories.

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What is external reliability?

This refers to the ability of a research study to produce consistent results if repeated under similar conditions. If a study lacks external reliability, its findings may not be replicated in other settings or with different participants.

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Episodic memory

A memory system that stores personal experiences and events, including details of time and place.

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Semantic memory

A memory system that stores general knowledge and facts about the world, including language and concepts.

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Procedural memory

A memory system that stores skills and procedures, such as riding a bike or playing an instrument.

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Anterograde amnesia

The inability to create new episodic memories after brain damage.

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Retrograde amnesia

The inability to retrieve past memories before brain damage.

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HM (Milner, 1962)

A case study of a patient (HM) who suffered anterograde amnesia after surgery to remove his hippocampus and temporal lobes.

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CL (Vicari et al., 2007)

A case study of a young girl (CL) who suffered brain damage after surgery to remove a tumor, resulting in the inability to form new episodic memories, but retaining semantic memory.

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Memory stores theory

The idea that different types of memory are stored in different brain regions.

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Working memory model (Baddeley & Hitch, 1974)

A model that proposes a central executive that controls two slave systems: the phonological loop and the visuospatial sketchpad.

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Phonological loop

The part of the working memory model that processes and stores speech-based information.

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Visuospatial sketchpad

The part of the working memory model that processes and stores visual and spatial information.

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Episodic buffer

The part of the working memory model that acts as a temporary buffer, integrating information from different sources.

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Interference theory

The process of forgetting due to competition between memories.

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Proactive interference (PI)

Forgetting caused by previously learned information interfering with the learning of new information.

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Retroactive interference (RI)

Forgetting caused by newly learned information interfering with the retrieval of old information.

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Forgetting Curve

Forgetting increases over time but is minimal initially. Earlier memories interfere with new memories.

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Proactive Interference

Prior knowledge disrupts learning new information. Like trying to remember your old phone number after learning a new one.

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Unlearning Theory

New memories overwrite old memories. Learning a new task might make you forget a previous one.

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Retroactive Interference

New information interferes with recalling old information. Learning a new phone number makes it hard to remember the old one.

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Retrieval Failure

Memories aren't lost, but the right cues are missing to access them.

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Cue Effectiveness

Reminders or cues are more effective when linked to fewer items. Think of labels on a filing system.

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Encoding-Specificity Principle

Memory recall is best when the retrieval environment matches the learning environment.

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Context-Dependent Failure

External cues like location or sounds can help trigger memory recall.

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State-Dependent Failure

Internal states, like mood, can affect memory retrieval. Learn happy, recall happy.

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Misleading Information

Leading questions can influence memory recall. Think about asking someone how fast a car was going during a 'smash' or a 'bump'.

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Loftus & Palmer (1974)

Loftus & Palmer's study showed how leading questions can affect estimations of speed and lead to false memories of broken glass.

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Loftus & Pickrell (1995)

Loftus & Pickrell's study showed how misleading information can create false memories about childhood events.

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Post-Event Information

Discussions with others and repeated questioning can alter or contaminate memories of events.

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Anxiety & Eyewitness Testimony

Anxiety can affect the accuracy of eyewitness testimony.

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Conformity effect

This occurs when co-witnesses discuss an event and reach a consensus view of what they think happened. This can lead to inaccurate memories as individuals may incorporate information from others into their own memories.

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Cognitive interview

This is a technique used by police to help eyewitnesses recall information more accurately. It encourages witnesses to reconstruct the event by using various retrieval cues, like imagining themselves back at the scene and describing the event from different perspectives.

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False Memory Creation

The process of creating false memories through suggestion and misleading information. This highlights how our memories can be influenced by external factors.

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Ecological validity

The ability of a study's findings to be generalized to real-world situations. A study with high this means its results can be applied to situations outside of the controlled research environment.

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Evidence for the Cognitive Interview

Fisher et al (2003) found that the Cognitive Interview technique was more effective than standard police interviews in helping eyewitnesses recall accurate details.

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False memories

This suggests that inaccurate memories can be created through suggestion and misleading information, even when people believe they are remembering something that actually happened. Studies found that 29% of participants recalled false information and believed it to be true.

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Study Notes

Multi-Store Model of Memory

  • Atkinson & Shiffrin's Multi-Store Model (MSM): A structural model proposing three separate memory stores (sensory memory, short-term memory, long-term memory) with information flowing linearly between them.
  • Sensory Memory (SM): The first storage system, receiving raw, unprocessed information. Composed of sensory registers (SRs) each processing specific senses.
    • Iconic register (vision), echoic register (sound), haptic register (touch)
    • Large capacity; milliseconds of duration unless attended to.
  • Short-Term Memory (STM): Maintains information via rehearsal.
    • Duration: Up to 18 seconds.
    • Capacity: 7 +/- 2 items.
    • Encodes acoustically (based on sound).
    • Vulnerable to decay and displacement.
  • Long-Term Memory (LTM): Unlimited capacity and duration; dependent on processing depth.
    • Encodes semantically (based on meaning).
    • Information passes to LTM through deep rehearsal (elaborative or maintenance).

Support for the MSM

  • Glanzer et al's study: Primacy and recency effects demonstrate separate STM and LTM stores.
    • Primacy: Early words recalled better due to transfer to LTM.
    • Recency: Late words recalled better due to presence in STM.
    • Delaying recall (10+ seconds) removes recency, supporting separate stores.
  • Brain scanning evidence: PET and fMRI scans highlight different brain areas for STM and LTM:
    • Prefrontal cortex linked to STM
    • Hippocampus linked to LTM
    • Providing neurobiological evidence for separate stores.

Limitations of the MSM

  • Oversimplification: The MSM simplifies memory processes.
  • Case of KF: KF had STM deficits with verbal information but not visual, indicating that STM is not a single store.
  • Different types of LTM: Theories like Schachter's model propose different types of LTM stores.
    • Spiers et al: Amnesia patients show deficits in certain LTM types (semantic, episodic).
    • Clive Wearing case: Episodic memory loss but intact procedural memory.
  • Ecological validity issues: Laboratory-based studies (free recall) lack ecological validity.

Long-Term Memory (LTM) Subsystems

  • Declarative Memory: Consciously recalled knowledge.
    • Episodic Memory: Personal experiences and events.
      • Strength is emotionally driven
      • Strength encodes emotionally
    • Semantic Memory: Facts and general knowledge.
      • Strength depends on processing depth
  • Procedural Memory: "Knowing how" memory for skills.
    • Learned through repetition and practice (e.g., riding a bike).
    • Doesn't rely on hippocampus.

Working Memory Model (WMM)

  • Replacement for STM: Suggests short-term memory is an active processor (working memory).
  • Central Executive (CE): The primary component; directs attention and resources; coordinates other systems.
  • Slave Systems:
    • Phonological Loop: Processes spoken/heard information.
      • Phonological store (inner ear).
      • Articulatory control process (inner voice).
      • Limited capacity (2 seconds).
    • Visuospatial Sketchpad (VSS): Processes visual and spatial information.
    • Visual cache (CV): Stores visual information (color, form).
    • Inner scribe (IS): Stores spatial relationships and re-hearses information.
    • Episodic Buffer: Temporary storage, integrates information from various systems (including LTM).

Forgetting

  • Interference Theory: Forgetting caused by conflicting memories.
    • Proactive Interference (PI): Old memories interfere with new ones (e.g. old mobile number).
    • Retroactive Interference (RI): New memories interfere with old ones (e.g. new phone number).
  • Retrieval Failure: Forgetting due to insufficient cues for retrieval.
    • Encoding Specificity principle: Retrieval best when context matches encoding context.
    • Context-dependent failure: Environmental cues influence recall.
    • State-dependent failure: Internal states (e.g. mood, drugs) affect recall.

Eyewitness Testimony

  • Misleading information: Leading questions and post-event information can distort recall.
    • Loftus & Palmer (1974): Verb manipulation in car accident descriptions altered speed estimates.
    • Loftus & Pickrell (1995): False memories can be implanted.
  • Cognitive Interview: Technique to enhance recall accuracy.
    • Encourages various recall strategies (e.g., changing perspective, different questioning).
    • Aims to reduce anxiety and minimise distractions.

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