Multi-store Model

Multi-store Model (MSM) of memory by Atkinson and Shiffrin (1968) proposes distinct memory stores: sensory memory, short-term memory (STM), and long-term memory (LTM).

Sensory Memory: briefly holds sensory information (visual, auditory, etc.).

Short-Term Memory (STM):

Limited capacity (about 7 items, Miller's "Magic Number").

Duration of 6–18 seconds; information may be lost without rehearsal.

Long-Term Memory (LTM):

Indefinite duration and capacity.

Memories may be distorted upon retrieval.

Research supporting the model includes Miller's (1956) studies on capacity and Milner's (1966) case study of HM.

Strengths of MSC:

Significant research supports the existence of separate memory stores.

Provides a historical framework for understanding memory.

Limitations of MSM:

Oversimplifies memory processes.

Does not explain memory distortion or effective learning with minimal rehearsal.