Correct associative memory on immediate and delayed memory tests. Correct source memory was greater for the twice-studied Sleep and Morning List pairs than the once presented Single Study List pairs (main effect of list: F(2,36) = 57.44, p < 0.0001; SL < SS: p < 0.0001; ML < SS: p < 0.0001), and better for the immediate test than delayed test (main effect test: F(1,18) = 136, p < 0.001), consistent with forgetting over time. There was additionally a main effect of category (F(1,18) = 13.03, p = 0.002), with scene–word pairs generally better remembered than object–word pairs. A significant list × category × test interaction (F(2,36) = 4.42, p = 0.019) seemed driven by a significant difference between accuracy on the object and scene pairs for all comparisons except the Sleep List during the immediate test (p = 0.21), including the delayed test (p = 0.036, object < scene). Lines represent significant differences p < 0.05, error bars denote SEM.