Calev A, Erwin P G
Br J Clin Psychol. 1985 May;24 ( Pt 2):127-8. doi: 10.1111/j.2044-8260.1985.tb01323.x.
This study uses matched tasks methodology, and shows that unipolar depressives perform better on recognition than on recall. Since they also show a low level of item clustering in free recall, this suggests that the memory deficit of depressives is partly due to an associative disturbance.