Concepts of Human Memory

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Concepts of Human Memory

• Thursday, 3/9/06

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From last time

• Dual Store Theory (component model)
• Atkinson Shiffrin (1968)
• STM, LTM, Sensory Memory
• Divisions of LTM
• Declarative (Episodic Semantic)
• Nondeclarative (Procedural

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• Repetition Priming previous exposure to a
  stimulus facilitates future processing of that
  stimulus.
• Participants see doctor at study
• Word-stem completion (DOC_)
• Word fragment (D_C_R)
• Anagram (ROCODT)
• Perceptual-identification
• Words presented at test for 30ms

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Processing of Memory

• Depth of Processing
• (Craik Lockhart, 1972)
• Memory is comprised of a single memory system
  where the amount and quality of processing
  determines whether information is remembered.

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• Maintenance rehearsal passively repeating
  information.
• Elaborative rehearsal actively comprehending
  and adding meaning to information.

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Connectionism

• Mental activity can be described and understood
  as interconnected networks of simple units
  (nodes).

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• Basic Principles
• Each node can have connections to many nodes.
• Activating nodes simultaneously increases the
  connection weight between the nodes.
• Much like a neuron, nodes or networks of nodes
  can be activated, and then eventually return to a
  resting state.
• Activation of a node is contingent upon
  surpassing a stimulation threshold.
• Multiple layers of nodes likely exist.

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Stages of Memory

• Not a theory. Rather, a description of memory
  processes useful for understanding memory.
• Compatible with most theories of memory.

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• Encoding attending to, interpreting, and adding
  meaning to incoming information.
• Storage associating new information with
  information already stored in memory. (i.e.
  filing)
• Retrieval effectively accessing information
  stored in memory.

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Have a great spring break!