Psychology Chapter on Memory and Schemas

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Questions and Answers

What is a schema?

  • A method for organizing physical spaces
  • A type of computer program
  • A complex mathematical formula
  • A connected knowledge set about the world, specific events, people, and actions (correct)

Schemas always improve memory recall and never hinder it.

False (B)

What was the primary finding in Bartlett's 'War of the Ghosts' study?

Memory is constructive and influenced by cultural schemas.

Without a title or activated ________, a text can be difficult to interpret and remember.

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

Which of the following is NOT a characteristic of memory, according to the provided text?

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

It's better to do more at a time rather than less when completing a procedure.

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

In the 'washing clothes' example, what happens after the procedure is completed?

<p>The items are reorganized and put back in their place.</p> Signup and view all the answers

Match the concept with its description

<p>Schema = Connected knowledge set about the world Constructive Memory = Representation based on schemas War of the Ghosts = Study showing culture-specific recall Familiarity Effect = Text becomes easily understood due to an activated schema</p> Signup and view all the answers

What is the primary function of a schema?

<p>To structure prior expectations, highlight the essence, and aid memory. (A)</p> Signup and view all the answers

Scripts describe aspects of the world, like buildings and objects.

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

What is the key challenge in interpreting the initial text without a title or activated schema?

<p>It is difficult to interpret the text, highlight the essence, and remember the steps.</p> Signup and view all the answers

Frames describe aspects of the world or objects and their ______.

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

What common type of everyday situation might a script represent?

<p>A restaurant dinner. (B)</p> Signup and view all the answers

Match the following concepts with their descriptions:

<p>Schemas = Prior expectations structuring, highlighting essence, and aiding memory. Scripts = Typical sequence of events and their consequences. Frames = Aspects of the world or objects and their characteristics.</p> Signup and view all the answers

Structured information and 'empty values' do not limit interpretation and memory.

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

What happens after completing a procedure with a set of items, according to the provided text?

<p>The items are reorganized and returned to their place.If they are used again, the cycle repeats.</p> Signup and view all the answers

Which of the following is a theory of semantic memory?

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

The Deese-Roediger-McDermott (DRM) paradigm demonstrates that encoding context does not affect later memory recall.

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

According to the models of semantic networks, what is a key feature of the Collins & Loftus model?

<p>Spreading activation</p> Signup and view all the answers

The theory of forgetting that proposes memories fade over time is the ______ hypothesis.

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

What does the 'labeling effect', as studied by Carmichael (1932), demonstrate regarding encoding context?

<p>The way information is labeled during encoding affects later memory recall. (B)</p> Signup and view all the answers

Match the following types of interference with their correct description:

<p>Proactive Interference = Old information interferes with the recall of new information Retroactive Interference = New information interferes with the recall of old information.</p> Signup and view all the answers

Repetition-induced inhibition (RIF) refers to scenarios where people intentionally forget certain information.

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

According to the models of semantic networks, What does the concept of cognitive economy refer to in the Collins & Quillian model?

<p>The principle that properties are only stored at the highest possible level in the hierarchy. (C)</p> Signup and view all the answers

Which of the following best describes the main idea of the provided text?

<p>Human memory distortions are a result of resource constraints and are explained by a generative model adapted to the environment. (A)</p> Signup and view all the answers

The study suggests that traditional lossy compression algorithms result in the same types of distortions as seen in human memory experiments.

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

What field can be used to formalise the constraints on memory?

<p>normative framework of lossy compression</p> Signup and view all the answers

The semantic compression framework can provide a unifying explanation of a wide variety of __________ phenomena.

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

Which of the following datasets were used in the study to demonstrate the effects of semantic compression?

<p>Chess games, natural text, and hand-drawn sketches (A)</p> Signup and view all the answers

The human memory performs exceptionally well in all everyday tasks.

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

Match the following concepts with their descriptions according to the text:

<p>Resource constraints = Limitations on memory that result in a loss of information Generative model = A model adapted to the environment for compression Semantic compression = A framework providing explanation for memory phenomena Memory distortions = Systematic errors in recall that have been associated to limitations</p> Signup and view all the answers

Name one type of memory effect, besides the effects of domain expertise and delayed recall, that are accounted for by the described semantic compression model.

<p>gist-based distortions and contextual effects</p> Signup and view all the answers

Which of the following is an intentional forgetting paradigm?

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

In the Think/No-Think task, participants are instructed to either recall or actively suppress memories.

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

What is the primary deficit seen in Anterograde amnesia?

<p>deficit in forming new memories</p> Signup and view all the answers

In retrograde amnesia, there is typically a ______, with recent memories being more impaired than remote memories.

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

Match each type of amnesia with its primary characteristic:

<p>Retrograde Amnesia = Loss of previously acquired memories Anterograde Amnesia = Difficulty forming new memories With Temporal Gradient = More impact on recent memories than remote</p> Signup and view all the answers

According to the alternative memory taxonomy, which of these is a basic processing mode?

<p>Rapid vs. Slow encoding (D)</p> Signup and view all the answers

K.C. was observed to have an intact retrograde memory for episodic events.

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

What type of amnesia did patient H.M. have?

<p>Anterograde amnesia with temporal gradient retrograde</p> Signup and view all the answers

In the Deese-Roediger-McDermott (DRM) paradigm example, which of the following items are considered critical elements?

<p>spaceship, phone, tourist bus/coach, beach ball (B)</p> Signup and view all the answers

In the chess expert study, reconstruction accuracy was higher for random chess board configurations compared to actual game configurations.

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

What is the main difference between the 'learned' and 'novel' items in the DRM paradigm example?

<p>Learned items were those presented in a previous study, while novel items were presented for the first time in the current study.</p> Signup and view all the answers

The chess expert study suggests that expertise helps create a generative model to encode either game or random boards into a _______ representation.

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

In Figure 1, what do green frames indicate in the chess board reconstructions?

<p>Correctly reconstructed pieces (A)</p> Signup and view all the answers

The QuickDraw data set of eyeglasses represents clear and unambiguous images.

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

According to the chess study, what type of domain knowledge is relevant for the memorization task?

<p>Chess expertise, which allows for encoding the game configurations in memory.</p> Signup and view all the answers

Match the type of memory study with its focus:

<p>DRM paradigm = False memories, intrusion errors Chess study = Expertise, schema effects Quickdraw eyeglasses = Ambiguous images, schema effects</p> Signup and view all the answers

Flashcards

Schema (in memory)

A mental framework that organizes and facilitates our knowledge about the world, people, and events.

Familiarity Effect

The tendency for familiar information to be more easily encoded, stored, and retrieved.

Typicality Effect

The tendency for typical examples of a category to be more easily recalled.

Constructive Memory

A process where our memories are influenced by our existing knowledge and expectations.

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War of the Ghosts Story

A story used in memory research to demonstrate the impact of schemas on recall. Participants often omit, reformulate, and add details to fit their own cultural understanding.

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Context-Dependent Memory

The ability to recall information is greatly affected by the context or situation we are in. This refers to the retrieval of information.

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The Importance of Context

A phenomenon where a missing title or context makes it difficult to understand and remember information.

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Retrieval (in memory)

The process of reorganizing and recalling information from memory.

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Hierarchical Organization in Semantic Networks

The idea that our knowledge is organized in a hierarchical structure, with more general concepts at the top and more specific concepts at the bottom. This means that information about a specific concept (like 'canary') is stored only once at the highest level where it applies, reducing redundancy and allowing for efficient access.

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Semantic Network Models

Semantic Networks are models that represent knowledge as interconnected nodes representing concepts and links representing relationships between them. This model explains how we access and process information by traversing these networks, spreading activation through them. The strength of association between concepts influences the speed of accessing related information.

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Scripts

A structured representation of a common event or routine, such as going to a restaurant. It contains slots for typical actions and objects involved, allowing us to predict and understand situations based on pre-existing knowledge.

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Schemas

A mental framework or structure representing a typical situation, event, or object. They help us organize and interpret incoming information using our pre-existing knowledge. For example, our 'restaurant' schema includes typical elements like tables, waiters, menus, and ordering food.

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Prototype Theory

This theory suggests that we represent concepts by comparing them to a 'prototype', the most typical example of that category. The closer an item is to the prototype, the easier it is to categorize. For example, a robin is a more typical bird than a penguin, making it easier to categorize as a bird.

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Deese-Roediger-McDermott (DRM) Paradigm

This paradigm demonstrates the influence of knowledge on memory recall. It shows that exposure to a set of related words (e.g., 'bed', 'sleep', 'dream') increases the likelihood of falsely recalling a non-presented word that fits the theme ('rest'). This reveals that our stored knowledge can influence what we remember, even leading to false memories.

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Labeling Effect (Carmichael, 1932)

This effect demonstrates the impact of encoding context on memory retrieval. When we label stimuli during encoding, it improves later recall. For example, if you view images and label them with words, your recall is better than if you just view them silently. This shows knowledge and our interactions with information can improve memory.

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Trace Decay Hypothesis

States that forgetting occurs due to the gradual fading of memory traces over time. Think of it like a footprint in the sand slowly eroding away with time.

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Memory Distortions

Memory distortions are systematic errors in recalling information, often occurring due to limited resources.

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Lossy Compression in Memory

The theory that memory operates like a lossy compression system, discarding information to save resources.

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Generative Model

A mental model that helps us understand and organize information, incorporating existing knowledge and biases.

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Semantic Compression

The unique patterns of memory distortions caused by relying on a generative model.

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Deep Generative Models

A deep learning technique that uses complex networks to learn and mimic generative models.

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Domain Expertise

Experiences or background knowledge that influence how we store and recall information.

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Gist-Based Distortions

The tendency to remember the gist or general meaning of information, rather than specific details.

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Contextual Effects

How our current surroundings or thoughts affect what we can remember.

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Frame

A structure that represents specific aspects of the world or objects, including their attributes, characteristics, and relationships. It helps us understand and categorize information.

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Effect of Knowledge on Memory

The influence of existing knowledge on our interpretation, memory, and understanding of information. It shapes how we perceive and recall experiences.

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Knowledge Representations: Organizing Memory

Knowledge structures, like schemas and frames, help us organize and store information. They provide a foundation for understanding and retrieving information, making our memory more efficient.

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Interpretation/Labeling Effect

The process of understanding and labeling information based on our existing knowledge. We try to make sense of new information by connecting it to what we already know.

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Optimal Forgetting

A phenomenon where forgetting certain details can be beneficial to simplify and compress our memories. We retain the essential information without being overwhelmed by unnecessary details.

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Directed Forgetting

A memory paradigm where participants are instructed to forget some items while remembering others.

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Think/No-Think Task

A memory task where participants are presented with a list of words and instructed to either "think" or "no-think" about each word.

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Retrieval Induced Forgetting (RIF)

A memory phenomenon where retrieving some information inhibits the recall of other related information.

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Anterograde Amnesia

The inability to form new memories after an injury or event.

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Retrograde Amnesia

The inability to recall past events or information before an injury or event.

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Temporal Gradient in Retrograde Amnesia

A type of amnesia where the individual has a more profound deficit for events that happened closer to the injury.

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Alternative Memory Taxonomy

A model of memory that proposes three basic processing modes: rapid/slow encoding, associative/single item encoding, and flexible/rigid encoding.

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H.M. (Amnesic Syndrome)

A famous case study of a patient with anterograde amnesia and a temporal gradient of retrograde amnesia.

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Study Notes

Knowledge, Memory, and Forgetting

  • Semantic Memory Theories: Schemas (Bartlett), scripts (Schank), semantic networks, prototype/exemplar theory.
  • Role of Knowledge in Memory: Deese-Roediger-McDermott (DRM) paradigm, encoding context effects (e.g., labeling effect), expert knowledge effects, rule learning.
  • Healthy Forms of Forgetting: Trace decay hypothesis, interference theory (proactive & retroactive), consolidation disorders (classic & multiple trace theories), memory inhibition phenomena (intentional forgetting, retrieval-induced forgetting).

Knowledge Representation

  • Mental Representations: Knowledge is stored and retrievable, and is used to organize or model complex situational knowledge.
  • Mental Representations: Representations are often sketchy and general.

Models of Semantic Networks

  • Collins & Quillian (1969): Hierarchical organization of knowledge, basic principle of cognitive economy.
  • Collins & Loftus (1975): Spreading activation, semantic distance impacts activation.

Schema

  • Sir Frederic Bartlett: Connected knowledge sets, organizational frameworks for knowledge that may also limit memory organization.
  • War of the Ghosts Study: Demonstrates culture-specific memory effects (omissions, reformulations) showcasing memory as constructive.

What is it About?

  • Procedure Overview (translated): Organise items into groups (single pile is possible). Retrieve important items. Avoid overdoing it. Smaller tasks are better. Complication can occur. Reorganise items in place, repeat steps if required.

The Big Washing of Clothes

  • Procedure Overview (translated): Organise items into groups then retrieve important items. Avoid overdoing it. Smaller tasks are better. Complication can occur. Reorganise items in place, repeat steps if required.

Scripts and Frames

  • Roger C. Schank: Scripts are schemas that describe sequences of events; frames describe aspects of the world or objects and their characteristics.
  • **Models:**Structured information and "empty values" are inherent in these models, which guide and limit interpretation and memory based on the structured knowledge.

The Effect of Knowledge Representations on Our Memory

  • Demonstration of DRM Paradigm: Deese-Roediger-McDermott (DRM) paradigm demonstration on memory.

Forgetting

  • Philosophical Question: Does forgetting even exist?
  • Accessibility vs. Availability: Retrieval is different from simply having stored information.
  • Diary Studies: Successful retrieval alongside cues (what, where, with whom).
  • Case Studies: Case studies of forgetting (e.g., case of S).

Forgetting Curve

  • Ebbinghaus (1885/1913): A plot of forgetting over time, showing initial rapid loss followed by a slower decline.

What is Behind Forgetting?

  • Trace Decay Hypothesis: Memory trace fades over time.
  • Interference Theory: Similar memories compete during retrieval – proactive interference (old memories interfering), retroactive interference (new interfering).
  • Consolidation Disorders: Problems in the process of storing memories in permanent storage.
  • Memory Inhibition Phenomena: Active suppression of memories.

Decay of Memory Trace

  • Example Research: Study using STM Brown-Peterson task demonstrating time's effect on memory trace.

Interference

  • Proactive Interference: Earlier memories interfere with the retrieval of newer memories.
  • Retroactive Interference: Newer memories disrupt the retrieval of older memories.

Forgetting Consolidation Deficit

  • Standard Consolidation Model: Memory transfer from hippocampus to cortex.
  • Multiple Trace Theory: Separate memories stored in different brain locations.

Forgetting as an Active, Effortful Process

  • Bjork & Retrieval Inhibition: Irrelevant memory elements are actively suppressed, which limits access.

Inhibition Based Experimental Paradigms

  • Intentional Forgetting: Directed forgetting (DF), think/no-think tasks (inhibition response).
  • Retrieval Induced Forgetting (RIF): Retrieval practice leads to forgetting other related information.

Directed Forgetting

  • Bjork et al. (1968, 1970, 1996): "Remember" vs. "Forget" instructions on memory lists.

Think/No-Think Task

  • Sullivan et al. (2019): "Think" tasks vs. "No-Think" tasks where you're trained to not think certain things.

Retrieval Induced Forgetting

  • Retrieval Practice Paradigm: Studying retrieval practice using category-exemplar pairs to explore retrieval induced forgetting.

Amnesia

  • Retrograde Amnesia: Deficit in memories acquired before the injury.
  • Anterograde Amnesia: Deficit in storing new memories.
  • Temporal Gradient: Retrograde amnesia often exhibits a strong temporal gradient, with more recent memories more susceptible to loss.

Amnesias

  • Taxonomy of Amnesias: Different types of amnesia (organic, psychogenic, transient, permanent, etc.).

H.M. and K.C.

  • H.M. Amnesic syndrome, anterograde amnesia with temporal gradient retrograde.
  • K.C. Anterograde amnesia with extensive retrograde amnesia for episodic memories while semantic memory was retained.

Alternative Memory Taxonomy

  • Processing Modes: Rapid vs. Slow encoding, associative vs. single-item encoding, flexible (compositional) vs rigid (unitized).
  • Brain Areas: Hippocampus, neocortex, basal ganglia, cerebellum.

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