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Flashcard memory retention (as measured by Anki study interval), plotted by creation date and number of practice exposures for each created flashcard. Two of her 591 cards (“cardinal” and “cockroach”) had over 100 exposures each, and were removed here for plotting purposes (but not from the corresponding analyses). Circled datapoints A, B and C represent specific practiced items; see text in “Treatment Results” above for discussion.
