Encoding means holding information in the memory system.

Retrieval is recovering information from storage.

There are two stores in the multi-store model of memory.

Information must be stored before it can be encoded

The sensory information store holds information received from the senses for a very short period of time.

The short term store holds a vast amount of information for a very long period of time.

Peterson and Peterson investigation involved giving trigrams to participants

Peterson and Peterson's investigation included asking participants to learn lists of paired-words.

Peterson and Peterson's investigation includes asking participants to count backwards in 3s for the same length of time.

A practical application of the multi-store model is chunking information to remember registration plates.