Our new paper, “The spacing effect stands up to big data”, is now accessible here. We analyzed longitudinal data from 10,514 individuals, collected in the context of naturally occurring workplace training. Our results revealed a significant interaction between spacing interval and retention interval: the optimal amount of spacing between repeated retrieval events increased as the retention interval increased. These findings are in line with the results of laboratory studies, demonstrating the relevance and transferability of laboratory-based research to real-world contexts.
A big thank you to my co-authors for their contributions to the study, as well as Carol Leaman and the entire Axonify team for such a great, ongoing collaboration.