Cognitive Psychology Lectures:  By Stephen R. Schmidt, MTSU

A Process Model of Cognition

  1. Information Processing Approach
  2. Overview of the Model
  3. Some important Distinctions
  4. Evolution of the Model

I. Information Processing Approach

A. Computer analogy


 

B. Stage analysis


 

II. Overview of the Model

A.  The Atkinson and Shiffrin Model
graphic

B.  Major components of a computer system


(graphic)

III. Some important distinctions

A. Structure vs. Processes

    Structure -> system hardware

    Process -> computer software

B. Psychological Structures vs. Physiological Structures

    Psychological Structure ->  STS, LTS

    Physiological Structures -> hippocampus

        An example of a lack of isomorphism between psychological and Physiological Structures:

            Pet Activations during a verbal working memory task (Smith & Jonides, 1977)


 

C.  Levels of Analysis (Marr, 1982)
 
 
Computational Algorithmic Implementation
What is computed? How are computations made How are algorithms physically
realized
Map of input to output Form of the representation
Nature of the operations
Physical system

Examples:

    calculator
    mental imagery

IV. Evolution of the model

Recursive Decomposition

    Example:  Short-Term Store


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