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Refining CVLT-II recognition discriminability indices to enhance the characterization of recognition memory changes
Lisa V Graves1,2, Emily J Van Etten2, Heather M Holden1,2
1a Joint Doctoral Program in Clinical Psychology , San Diego State University/University of California San Diego , San Diego/La Jolla , CA , USA.
Abstract:
The present study examined age-related differences on the four false-positive (FP) error subtypes found on the California Verbal Learning Test-Second Edition yes/no recognition memory trial and the influence of these subtypes on source and novel recognition discriminability (SoRD and NRD, respectively) index calculations. Healthy older (n = 55) adults generally made more FP errors than healthy young adults (n = 57). Accordingly, older adults performed worse than young adults on all SoRD and NRD indices. However, the manner in which FP error subtypes were incorporated into SoRD and NRD index calculations impacted the magnitudes of observed differences between and within the two age groups on SoRD and NRD indices. The present findings underline the importance of examining FP errors in assessments of recognition memory abilities, and using more refined indices of recognition discriminability to further elucidate the nature of age-related recognition memory impairment.
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