Memory in Psychology

Memory

What is Memory?

  • Definition: Memory is the faculty by which the mind stores and remembers information. It is fundamental to daily function, enabling meaningful life narratives and learning from experiences.

Importance of Memory

  • Essential for daily functioning
  • Helps create meaningful narratives
  • Enables learning from mistakes and successes

Memory and Learning

  • Memory and learning are intertwined phenomena
  • Distinction Example:
    • A phobia of dogs:
    • Learning: classical conditioning
    • Memory: episodic memory

Biological Basis of Memory

  • The brain consists of interconnected neurons called neural networks.
  • Neurons transmit information via electrochemical signals through synapses.
  • New connections form depending on input; unused ones may be lost.

Computer Analogy

  • Used to explain memory processing.
  • Computational models replicate mental activities, like Atkinson & Shiffrin’s Multistore Model.
  • Brain damage studies contribute to understanding function regionalization (e.g., Clive Wearing).

Basic Memory Processes

  • Encoding (or Acquisition): Process of getting information into memory.
  • Storage (or Maintenance): Maintaining information once it is encoded.
  • Retrieval (or Recovery): Bringing the information back out.

Encoding

  • Information is processed for storage: must be perceived and attended to.
  • Attention is crucial; disruptions can hinder memory encoding.
Strategies for Better Encoding
  • Elaboration: Connecting new information to existing knowledge.
  • Visual Imagery: Creating mental images of the information.
  • Self-Relevance: Making information personally meaningful.
  • Motivation to Remember: Actively considering future applications of the information.

Storage of Memory

  • Memory can be categorized into different modalities, such as short-term and long-term.

Retrieval

  • Memory retrieval depends on retrieval cues, with recall being less effective than recognition.
  • The context or emotional state can significantly influence this process.

Sensory and Working Memory

Definitions

  • Sensory Memory: Holds raw sensory data for about 1 second, includes echoic (auditory) and iconic (visual) memory.

Working Memory

  • Baddeley’s Working Memory Model: Includes components:
    • Phonological Loop: Repeating words to oneself (silent speech).
    • Visuospatial Sketchpad: Handling spatial and visual information.
    • Central Executive: Directs attention and processing.
    • Episodic Buffer: Integrates information from various sources.
  • Working memory capacity ranges from 4-7 units, depending on rehearsal strategies.

Long-term Memory

Types of Long-term Memory

  • Declarative (Explicit) Memory: Consciously recalled facts, events, beliefs.
    • Episodic Memory: Personal experiences (e.g., first day of school).
    • Semantic Memory: General knowledge (e.g., capital of France).
  • Procedural (Implicit) Memory: Skills and actions learned unconsciously (e.g., riding a bike).

Memory Errors and Failures

  • Forgetting Mechanisms:
    • Intrusion Errors: Inaccuracies in memory due to mixing in related but more recent information.
    • Replacement Errors: Loss of memory links through re-categorization.
Examples of Memory Errors
  • Misinformation Effects: Contamination due to external information.
  • Schematic Fitting: Adding familiar details based on biases or stereotypes.
  • Implications for eyewitness testimonies and repressed memories.
Types of Amnesia
  • Anterograde Amnesia: Loss of the ability to create new memories following an event.
  • Retrograde Amnesia: Inability to recall memories from before the event.