Fig. 2

Results of the end-of-week tests—better learning of dissimilar facts than similar ones. a The children were more accurate in the low-similarity weeks than in the high-similarity weeks. The thinner bars show the individual results of each participant. b Accuracy decreased as a function of the fact’s average similarity to the 3 other facts learned in the same week, even within the low-similarity sets and the high-similarity sets, suggesting that the fact-specific similarity is important