Memory Processing – AP Psychology

Atkinson-Shiffrin Model

The multi-store model identifies three distinct stages memory must pass through before it is permanently stored.

Stages of Memory

Sensory Memory
Fractions of a second. Holds raw sensory data (Iconic/Echoic). Decays instantly if ignored.

Short-Term / Working Memory
Holds 7±2 items for ~20-30 seconds. Requires active rehearsal to maintain.

Long-Term Memory
Limitless capacity and duration. Knowledge, skills, and experiences.