Cognitive Daily is an interesting blog that presents articles and posts within the field of cognitive psychology. Yesterday, Dave Munger wrote an interesting post called: How hints help speed up math performance — and what this says about memory. The post is about the following article:

Campbell, J.I., Fuchs-Lacelle, S., Phenix, T.L. (2006). Identical elements model of arithmetic memory: Extension to addition and subtraction. Memory & Cognition, 34(3), 633-647.