Cognitive Approach and Memory Models Notes

Cognitive Approach

  • Focuses on cognitive processes involved in memory and related phenomena.

  • Covers several key areas like schema theory, decision-making, reliability of cognitive processes, and the interplay between emotion and cognition.

  • Includes an exploration of digital technology's impact on cognitive functions.

Learning Outcomes

  • Define Memory: Cognitive process of processing, storing, and retrieving information.

  • Explain Memory Models: Overview of models like the Multi-Store Model and Working Memory Model.

  • Evaluate Memory Models: Understand strengths and weaknesses, supported by research.

  • Contrast Two Memory Models: Discuss differences between the multi-store and working models with examples.

Exam Question Types

Short Answer Questions (SAQ)

  • Describe one study supporting a memory model, including aim, method, results, conclusions, and model linkage.

  • Use specific terminology related to models of memory (e.g., Multi-Store Model, Working Model).

Long Answer Questions (LAQ)

  • Contrast two memory models, emphasizing their differences with supportive details.

Types of Long-Term Memory

  • Declarative Memory: Consciously recalled memories, further split into:

    • Episodic Memory: Specific events in time and place.

    • Semantic Memory: General facts and knowledge, not tied to specific time or place.

  • Non-Declarative Memory: Unconscious recollection, evidenced by performance, includes:

    • Procedural Memory: Skills and how to do things, often demonstrated without conscious recall.

Memory Models

Definition

  • Memory Model: A theoretical representation helping us understand memory structures and processes.

Models to Explore

  1. Multi-Store Model of Memory (MSM)

    • Proposed by Atkinson & Shiffrin (1968), illustrating memory as a sequential process through three components: sensory memory, short-term memory, and long-term memory.

  2. Working Memory Model (WMM)

    • Proposed by Baddeley & Hitch (1974), emphasizing the active processing and storage of information through multiple components such as the phonological loop, visuospatial sketchpad, and central executive.

Multi-Store Model of Memory (MSM)

  • Components:

    • Sensory Memory: Briefly holds incoming sensory information (1-4 seconds).

    • Short-Term Memory (STM): Limited duration (up to 30 seconds) with a capacity of approximately 7±2 chunks; requires rehearsal for transfer to LTM.

    • Long-Term Memory (LTM): Indefinite duration and potentially unlimited capacity, coded semantically.

  • H.M. Case Study (Milner, 1966):

    • Patient suffers from anterograde amnesia after surgery affecting his hippocampus; demonstrates separation of STM and LTM, supporting MSM.

Peterson & Peterson (1959)

  • Aim: Investigate STM duration and hypothesis that unrehearsed information is lost quickly.

  • Method: Lab experiment with university students, using trigrams and distracting tasks to test recall.

  • Results: Recall accuracy decreases with longer intervals; STM retention is approximately 18 seconds without rehearsal.

  • Conclusion: Supports MSM by illustrating the limited duration of STM and the necessity of rehearsal for LTM transfer.

Working Memory Model (WMM)

  • Proposes that STM consists of multiple components for processing different types of information:

    • Central Executive: Directs attention and coordinates tasks.

    • Phonological Loop: Handles auditory information.

    • Visuospatial Sketchpad: Processes visual and spatial information.

    • Episodic Buffer: Integrates information from the other components.

  • Quinn & McConnell (1996): Demonstrates the modality-specific nature of the components through dual-task experiments.

CK Evaluation

  • H.M. Case Study: Unique due to the specific brain damage suffered. It enhances understanding of the separation between STM and LTM in empirical studies but raises ethical concerns about consent and treatment of patients.

  • Peterson & Peterson: Critiqued for low ecological validity; however, it provides robust experimental control, increasing internal validity.

Summary of MSM & WMM Strengths and Limitations

  • Strengths of MSM:

    • Empirical support from cognitive and biological research.

    • Historical significance in understanding basic memory processes.

  • Limitations of MSM:

    • Over-simplified view of memory processes; does not account for complexities or variations in memory types.

  • Strengths of WMM:

    • More nuanced explanation of STM, supported by research demonstrating modality-specific processing.

  • Limitations of WMM:

    • Lacks clarity regarding the functions of the central executive and does not account for integration with sensory and long-term memory.

Cognitive Approach

Focuses on cognitive processes involved in memory and related phenomena, emphasizing how individuals perceive, think, and engage with information. The cognitive approach provides insight into the workings of the mind, allowing for a deeper understanding of how memory functions operate within broader cognitive frameworks.

Covers several key areas like schema theory, which explains how knowledge is organized and understood; decision-making processes, which explore how choices are made and influenced by cognitive biases; the reliability of cognitive processes, examining factors that can lead to memory distortions and inaccuracies; and the interplay between emotion and cognition, highlighting how emotional states can affect memory formation and recollection.

Includes an exploration of digital technology's impact on cognitive functions, addressing how tools like smartphones and computers may enhance or impede memory retention and recall, affecting cognitive load and attention.

Learning Outcomes

Define Memory: The cognitive process of processing, storing, and retrieving information, allowing individuals to access and utilize past experiences to inform present actions and future decisions. Memory plays a crucial role in learning and identity.

Explain Memory Models: Overview of models like the Multi-Store Model and Working Memory Model, detailing how they describe the structure and function of memory systems, including the processes of encoding, storage, and retrieval.

Evaluate Memory Models: Understand strengths and weaknesses, supported by research, to critically assess the validity and applicability of various memory models in real-world situations.

Contrast Two Memory Models: Discuss differences between the multi-store and working memory models with examples illustrating unique features, operational mechanisms, and how each model accounts for different types of memory tasks.

Exam Question Types

Short Answer Questions (SAQ)

Describe one study supporting a memory model, including aim, method, results, conclusions, and model linkage. Ensure to use specific terminology related to models of memory, such as the Multi-Store Model and Working Model, to demonstrate understanding.

Long Answer Questions (LAQ)

Contrast two memory models, emphasizing their differences with supportive details, such as empirical evidence from studies and practical implications for educational practices.

Types of Long-Term Memory

Declarative Memory: Consciously recalled memories, which can be verbally expressed and are further split into:

  • Episodic Memory: Specific events in time and place, tied to personal experiences and contextual details, allowing individuals to relive memories.

  • Semantic Memory: General facts and knowledge that are not tied to specific time or place, encompassing language, concepts, and various everyday information.

Non-Declarative Memory: Unconscious recollection, evidenced by performance, which includes:

  • Procedural Memory: Skills and how to do things, often demonstrated without conscious recall, such as riding a bike or playing a musical instrument.

Memory Models

Definition

Memory Model: A theoretical representation helping us understand memory structures and processes. These models provide frameworks for analyzing how information is encoded, stored, and retrieved, shaping our understanding of memory.

Models to Explore

  1. Multi-Store Model of Memory (MSM)

Proposed by Atkinson & Shiffrin (1968), illustrating memory as a sequential process through three components: sensory memory, short-term memory, and long-term memory. Each component plays a distinct role in processing information, emphasizing the flow of information through memory stages.

  1. Working Memory Model (WMM)

Proposed by Baddeley & Hitch (1974), emphasizing the active processing and storage of information through multiple components, including the phonological loop, visuospatial sketchpad, and central executive. This model highlights the complexity of short-term memory by subdividing its functions into specialized systems.

Multi-Store Model of Memory (MSM)

Components:

  • Sensory Memory: Briefly holds incoming sensory information (1-4 seconds) for initial processing, allowing for the filtration of relevant stimuli.

  • Short-Term Memory (STM): Limited duration of up to 30 seconds with a capacity of approximately 7±2 chunks; information requires rehearsal for transfer to long-term memory (LTM), enabling the temporary retention of information.

  • Long-Term Memory (LTM): Indefinite duration and potentially unlimited capacity, coded semantically, allowing for extensive storage of knowledge and experiences.

H.M. Case Study (Milner, 1966):
Patient suffers from anterograde amnesia after surgery affecting his hippocampus; demonstrates separation of STM and LTM, supporting the MSM by showing the limitations of recalling new memories while retaining older ones.

Peterson & Peterson (1959)

Aim: Investigate STM duration and hypothesis that unrehearsed information is lost quickly, contributing to understanding memory decay.

Method: Lab experiment with university students, using trigrams and distracting tasks to test recall over different intervals.

Results: Recall accuracy decreases with longer intervals; STM retention is approximately 18 seconds without rehearsal, highlighting the brief retention of information and the need for active engagement to maintain memory.

Conclusion: Supports MSM by illustrating the limited duration of STM and the necessity of rehearsal for LTM transfer, emphasizing how cognitive strategies improve memory retention.

Working Memory Model (WMM)

Proposes that STM consists of multiple components for processing different types of information:

  • Central Executive: Directs attention and coordinates tasks, managing the flow of information and cognitive resources.

  • Phonological Loop: Handles auditory information, maintaining and manipulating verbal sounds for short-term processing.

  • Visuospatial Sketchpad: Processes visual and spatial information, assisting in visual memorization and navigation tasks.

  • Episodic Buffer: Integrates information from the other components, allowing for a cohesive experience of episodic memories.

Quinn & McConnell (1996): Demonstrates the modality-specific nature of the components through dual-task experiments, revealing how interactions between memory systems influence performance on cognitive tasks.

CK Evaluation

H.M. Case Study: Unique due to the specific brain damage suffered. It enhances understanding of the separation between STM and LTM in empirical studies but raises ethical concerns about consent and treatment of patients, prompting discussions about research standards and participant rights.

Peterson & Peterson: Critiqued for low ecological validity; however, it provides robust experimental control, increasing internal validity through a highly controlled laboratory setting, offering insights into memory processes under experimental conditions.

Summary of MSM & WMM Strengths and Limitations

Strengths of MSM:

  • Empirical support from cognitive and biological research, validating the model through neuropsychological findings.

  • Historical significance in understanding basic memory processes, laying the groundwork for future research in cognitive psychology.

Limitations of MSM:

  • Over-simplified view of memory processes; does not account for complexities or variations in memory types, leading some critics to argue that memory is more dynamic than depicted.

Strengths of WMM:

  • More nuanced explanation of STM, supported by research demonstrating modality-specific processing; acknowledges the complexity of cognitive functions.

Limitations of WMM:

  • Lacks clarity regarding the functions of the central executive and does not account for integration with sensory and long-term memory, leaving questions about its operational definition and effectiveness unresolved.