In the Atkinson–Shiffrin model, what process most directly transfers information from short-term memory to long-term memory?
- Maintenance rehearsal, because repeating information keeps it active and increases chances of encoding into long‑term memory. (correct answer)
- Iconic persistence, because visual traces automatically become permanent after several seconds of exposure.
- Procedural conditioning, because habits are formed when short‑term memory capacity is exceeded.
- Retroactive interference, because new learning strengthens older memories by forcing deeper processing.
Explanation: In the Atkinson-Shiffrin model, maintenance rehearsal is the primary mechanism that transfers information from short-term memory to long-term memory by keeping information active and increasing the likelihood of successful encoding into the more permanent storage system. Repetition and rehearsal strengthen memory traces and facilitate the consolidation process that moves information from temporary to permanent storage. Iconic persistence refers to brief visual sensory memory traces, not long-term encoding. Procedural conditioning relates to habit formation through different mechanisms than the conscious rehearsal described in the modal model. Retroactive interference involves new learning disrupting old memories, not strengthening them. The serial position effect describes recall patterns rather than encoding processes. Maintenance rehearsal's role in keeping information active and promoting encoding makes it the key transfer mechanism in this foundational memory model.