Although the benefits of sleep for memory are well established, recent findings suggest that these effects may be more variable than expected. This symposium attempts to evaluate the robustness of the enhancing effect of sleep on memory. To this end, Chloe Newbury and Sabrina Berres will present two independent meta-analyses of the impact of sleep deprivation vs. wakefulness and sleep vs. wakefulness on declarative memory respectively. Both meta-analyses find that the meta-analytical effect of sleep on memory is not large but rather small to medium sized (approximately d = 0.4). Due to publication bias meta-analyses can inflate effect sizes making replication attempts of previous research necessary. In line with this, some well-known findings in sleep and memory research have proven difficult to replicate conceptually. For instance, David Morgan will present a large-scale (N = 4,000) registered report using online assessment showing no effect of sleep on recognition memory in an eyewitness identification paradigm. Finally, Gordon Feld will present data on an experiment using different word list lengths, which demonstrates the dependence of sleep-dependent memory consolidation on specific context factors. Taken together these findings demonstrate that the effect of sleep on memory may be less robust than expected from the literature. During the discussion, we will outline developments that could increase the robustness of sleep and memory findings in the future.

Zeitfenster der Veranstaltung (1)

Learning, memory, and sleep

Chair(s): David Philip Morgan (Mannheim), Gordon Feld (Mannheim)

Presenter(s): Chloe Newbury (London), Sabrina Berres (Mannheim), David Philip Morgan (Mannheim), Gordon Feld (Mannheim)