Self-generated mnemonics for number recall in young and old adults.

Self-generated strategies for recall of number facts were examined in 164 adults who ranged in age from 20 to 86 years. Participants recalled a number list that included six 2-digit prices and six 4-digit phone numbers. Following recall, participants reported their encoding strategies. A larger percentage of the younger subjects (< 49 yr.) reported using a specific verbal mediator to facilitate encoding, and younger subjects recalled more 2-digit and 4-digit numbers. Across age groups, the self-reported use of encoding strategies facilitated recall.