The multi-store model of memory, proposed by Atkinson and Shiffrin, describes memory as information flowing through three separate stores: sensory memory, short-term memory, and long-term memory, with attention and rehearsal moving information from one stage to the next.
The multi-store model (also called the Atkinson-Shiffrin model) pictures memory as an assembly line with three stations. First, everything your senses pick up lands briefly in sensory memory, a huge but extremely short-lived buffer. Whatever you pay attention to moves into short-term memory, a small workspace that holds a handful of items for seconds unless you actively rehearse them. Information you rehearse or meaningfully encode gets transferred into long-term memory, the essentially unlimited, durable store you pull from later.
The model's big idea is that these are separate stores connected by processes. Attention is the gate from sensory to short-term memory, rehearsal is the gate from short-term to long-term memory, and retrieval brings stored information back into short-term memory when you need it. It's a simple, testable map of how memories form, which is exactly why it became the starting point for memory research and why later psychologists found plenty to criticize about it.
This term anchors Topic 5.1, Introduction to Memory, and it's the framework the rest of the memory topics build on. Encoding, storage, retrieval, working memory, and forgetting all get defined in relation to this three-store map. AP Psych doesn't just ask you to recite the model. The course treats it the way psychologists do, as an influential early theory with known weaknesses. You should be able to name the three stores, explain how information moves between them, and explain the primary criticism that the model is too simple, especially its treatment of short-term memory as one passive holding tank rather than the active, multi-part working memory system later research revealed.
Keep studying AP Psychology Unit 5
Working memory model (Unit 5)
Working memory is basically the upgrade patch for this model's short-term store. Baddeley and colleagues showed short-term memory isn't one passive box but an active system with separate parts for verbal and visual information, which is the most-cited criticism of Atkinson and Shiffrin.
Cocktail Party Effect (Unit 5)
The cocktail party effect, hearing your name across a noisy room, shows the attention gate of the model in action. Selective attention decides which information escapes sensory memory and makes it into short-term memory, and everything else fades.
Explicit Memory (Unit 5)
Long-term memory in the original model is one big bin, but the course breaks it into types like explicit (conscious) and implicit (unconscious) memory. That subdivision is itself evidence the multi-store model was too simple.
Atkinson and Shiffrin (Unit 5)
Knowing the names matters because MCQs often phrase questions as 'Atkinson and Shiffrin's model' instead of 'multi-store model.' If you only know one label, you can miss an easy point.
This shows up almost entirely in multiple-choice form, and the questions come in two flavors. The first is straight application, like giving you a scenario (someone repeats a phone number to hold it in mind) and asking which store or process is involved. The second, and trickier, flavor asks about the model's primary criticism, which is exactly what Fiveable practice questions on this term target. The expected answer is that the model oversimplifies, particularly by treating short-term memory as a single passive store and by assuming rehearsal is the main route to long-term memory. No released FRQ has used this term verbatim, but the Article Analysis and Evidence-Based questions love memory research, so being able to evaluate this model like a scientist (what it explains, what it misses) is the skill to practice.
The multi-store model says information sits in a single short-term store and gets rehearsed into long-term memory. The working memory model replaces that single store with an active system that has multiple components handling verbal and visual information at the same time. Quick test: if the question is about three sequential stores and rehearsal, it's multi-store; if it's about manipulating information or doing two mental tasks at once, it's working memory.
The multi-store model, proposed by Atkinson and Shiffrin, says memory has three separate stores: sensory memory, short-term memory, and long-term memory.
Attention moves information from sensory memory into short-term memory, and rehearsal moves it from short-term into long-term memory.
Sensory memory is huge but fades in seconds, short-term memory holds only a few items briefly, and long-term memory is essentially unlimited and durable.
The primary criticism of the model is that it's too simplistic, especially in treating short-term memory as one passive store instead of an active working memory system.
The model also overstates rehearsal, since some information reaches long-term memory through meaning and automatic processing without deliberate repetition.
AP questions test both the model itself and your ability to critique it, so learn its weaknesses as carefully as its parts.
It's Atkinson and Shiffrin's theory that memory works through three separate stores. Information enters sensory memory, moves to short-term memory if you attend to it, and reaches long-term memory through rehearsal and encoding.
That it's too simple. Short-term memory isn't a single passive store (the working memory model shows it has multiple active components), and rehearsal isn't the only way information reaches long-term memory. This criticism is a common MCQ on its own.
No. Working memory is a later, more detailed replacement for the short-term store in the multi-store model. Multi-store describes three sequential boxes; working memory describes an active system that holds and manipulates verbal and visual information at the same time.
Partly. The basic distinction between sensory, short-term, and long-term memory still holds up, but psychologists no longer treat the stores as simple, single boxes. AP Psych expects you to know both the model and why it's been revised.
Attention transfers information from sensory memory to short-term memory, rehearsal and encoding transfer it from short-term to long-term memory, and retrieval brings long-term memories back into short-term memory for use.