The Multi-store Model of Memory or Atkinson-Shiffrin Model, so named after Richard Atkinson and Richard Shiffrin in 1968, distinguishes the three apparent separate elements that make up the memory, the sensory register, short term store and long term store. Many critics of this model claim that the Levels of Processing Model is a better representation of the brain's ability to store information in the long term memory. However, the Multi-store model proposes "rehearsal" as a means of maintaining information in the short-term store or transferring and storing information in the long term memory and this is what aligns these two models.
Repetition in the Multi-Store model, ensures that information is retained, and then recalled, more easily, the more it is repeated and using methods of "coding" information during the collection and transfer to the long term memory achieves a result a similar to the deep-processing found in the Levels of Processing model. The deep- processing in the Levels of Processing model relates to how long a person has thought about something, what connections that person has made with existing information in the memory and how it is organized or stored.
The referred to "coding" in the long term memory in the Multi-Store method relates more to the meaning of the information being stored rather than any sound reference which maintains verbal information in the short-term. This creates another similarity between the two models as, although the Levels of Processing model is a continuum and involves an analysis rather than a transfer, both concentrate on meaning and extracting information that has been organized in the Multi-Store model or according to its connection with previously stored information - thereby through organization - in the Levels of Processing model.
This then creates similarities between the two models which are often overlooked in considering the differences between the two.