John Malcolm Mitchell, 1911 Encyclopædia Britannica (1911)
“ Memory is commonly classified by psychologists according as it is exercised (a) mechanically, by attention and repetition; (b) judiciously, by careful selection and co-ordination; and (c) ingeniously, by means of artifices, i.e. mnemotechny, mnemonics. It must, however, be observed that no mnemonic is of any value which does not possess the qualities of (a) and (b) . A mnemonic is essentially a device which uses attention and repetition, and careful selection is equally necessary. A more accurate description of mnemonics is “mediate” or “indirect” memory. ”
