In a year, memory will benefit from learning, tomorrow it won't: distance and construal level effects on the basis of metamemory judgments
Journal of Experimental Psychology Learning Memory and Cognition (2013) - Comment
pubmed: 23586805  doi: 10.1037/a0032381  issn: 1939-1285  issn: 0278-7393 

Vered Halamish, Ravit Nussinson, Liat Ben-Ari