Abstract
The present study compared the performance of individuals with Huntington's disease (HD) and Alzheimer's disease (AD) on three types of California Verbal Learning Test–Second Edition (CVLT-II) recognition discriminability indices (RDI): Source, Novel, and Total. The HD and AD groups did not differ significantly on Source RDI (all 16 targets versus the 16 previously presented, List B, distractors). However, HD patients performed significantly better than AD patients on Total RDI (all 16 targets versus all 32 distractors) and Novel RDI (all 16 targets versus 16 new distractors). Implications of these findings on the differentiation of the memory disorders associated with HD and AD are discussed.
Preparation of this article was supported in part by a Veterans Administration Merit Review Grant (DD), a VA Career Development Award (MJ), and National Institute on Aging Grants RO1 AG12674 (MB), P50 AG05131 (UCSD ADRC), and R01 AG12963 (DS).