Why does guessing incorrectly enhance, rather than impair, retention?
Memory & Cognition (2014) - Comment
pubmed: 25120240  doi: 10.3758/s13421-014-0454-6  issn: 0090-502x  issn: 1532-5946 

Veronica X. Yan, Yue Yu, Michael A. Garcia, Robert A. Bjork