General knowledge and detailed memory benefit from different training sequences
Real-world learning contexts sometimes require the use of general knowledge, whereas others depend on recalling detailed information about individual events. By combining category learning with trial-unique source information, we examined how different learning sequences (blocked vs. interleaved) impact the acquisition of generalized (category-level) and detailed (exemplar-specific) knowledge. Participants were trained to identify paintings by different artists, half of which were studied in a sequence blocked by artist and the remainder interleaved between artists. Participants were tested on general knowledge (category induction) and detailed memory (source recall), both immediately after learning and a 1-week delay. We found that interleaved learning improved general knowledge, but blocked learning improved detailed memory. Furthermore, we found that general knowledge remained stable whereas detailed memory performance declined after a delay. Our results indicate that optimal training conditions differ based on the goals of learning such as enhancing general knowledge or improving memory of individual event details.