Selectively reviewing some items from a larger set of previously learned it
ems increases memory for the items that are reviewed but may also be accomp
anied by a cost: Memory for the nonreviewed items may be impaired relative
to cases where no review occurs at all. This cost to nonreviewed items has
primarily been shown in contexts of verbal list learning and in situations
where the reviewed and nonreviewed items are categorically or semantically
related. Using a more naturalistic impetus to selective review-photographs
relating to previously experienced events-we assessed whether the memory of
older and younger adults for unrelated complex activities that they themse
lves had performed was also impaired due to nonreview. Both younger and old
er adults showed impaired memory for nonreviewed activities when tested wit
h free recall (Experiment 1), but not when tested with recognition or cued
recall (Experiment 2). If mitigating retrieval cues are unavailable, select
ive review may impair memory for nonreviewed everyday events.