Numerous mnemonic techniques have been used and advocated throughout history. In this chapter, some of the most popular and enduring formal mnemonic and organizational mnemonic techniques are discussed in terms of their underlying processes. Specifically, the method of loci, the peg-word method, and the keyword method are discussed as formal mnemonic techniques. The use of acronyms, linking by story, and categorical and schematic organizations are discussed as organizational mnemonic techniques. As is described in the discussion, each of the mnemonic devices represents simple applications of well-researched psychological processes. Furthermore, examination of mnemonic techniques in light of basic research suggests that a specific combination of processes is necessary for the effectiveness of any given mnemonic.