Effectiveness of self-generated cues in younger and older adults: the role of retention interval.

Younger and older participants generated one or three properties to a set of forty nouns. Immediately after, one week after, or three weeks after this generation phase, the participants received an incidental recall test, in which they were cued with their self-generated properties, and requested to recall the nouns. Although the younger adults recalled more nouns than the older participants in all conditions, both age groups exhibited an extremely high level of immediate recall. In addition, younger and older adults did not differ with respect to the forgetting rate, and both age groups recalled more nouns when three, as compared to one, properties were provided as cues. It is suggested that cue effectiveness is optimized both for younger and older adults when the cues describing the information encoded are compatible and distinctive. Finally, it is emphasized that the individual's idiosyncratic knowledge may serve an important function in attempts at optimizing memory performance of elderly people.