Study Notes on the Modal Model of Memory

Modal Model of Memory

Overview of the Modal Model

  • Definition: The modal model of memory, developed by Atkinson and Shiffrin in 1968, describes how memory functions within the framework of various memory structures and processes.
  • Characteristics: This model is referred to as the "modal model" because it encapsulates key elements present in numerous memory models proposed during the 1960s.
  • Components: The model includes three principal types of memory stores: sensory memory, short-term memory (STM), and long-term memory (LTM).

Structure of Memory System

  • Architectural Components:
    • Sensory Memory: The initial stage where all incoming sensory information is briefly stored.
    • Short-Term Memory (STM): The next stage where selected information is temporarily maintained for a limited duration.
    • Long-Term Memory (LTM): The final storage stage where information can be retained for extended periods, potentially indefinitely.

Control Processes of Memory

  • Definition: Control processes are specific activities performed within the memory system that facilitate the retention, storage, and retrieval of information.
  • Rehearsal: A key control process that involves actively maintaining and organizing information in STM to transfer it into LTM.
  • Strategies:
    • Rehearsal Strategies: Techniques to make information more memorable, such as repeating a phone number.
    • Attention Strategies: Methods employed to focus on specific stimuli to enhance memory encoding.

Flow Diagram of Memory Processes

  • Input: All information presented on a screen enters sensory memory, as illustrated in the flow diagram (Figure 5.2).
Sensory Memory Flow
  • Flow:
    • All incoming information enters sensory memory.
    • Example: Displaying a series of numbers or letters which are briefly perceived before being acted upon.
Short-Term Memory Flow
  • Focus Mechanism:
    • Selected information, such as a phone number (e.g., 555-5100), shifts from sensory memory into STM when attention is directed toward it.
Rehearsal in Short-Term Memory
  • Example of Rehearsal:
    • A person actively repeats the phone number (555-5100) to maintain it in STM while making a call.
    • Purpose: Keeps the information accessible for immediate use, such as dialing the number.
Storage in Long-Term Memory
  • Memorization Process:
    • The information (e.g., 555-5100) can be transferred and stored in LTM after sufficient rehearsal and encoding.
    • Long-Term Storage: Allows for retention of information beyond the original moment of attention.
Retrieval from Long-Term Memory
  • Retrieval Mechanism:
    • The information is brought back from LTM into STM when needed, such as when the individual wants to remember the number for a future call.
    • Awareness: The retrieved information becomes consciously available, facilitating recall for its use in relevant contexts.