B - 137 Analyzing Completion Time on a Created Forced Choice Trial of the Hopkins Verbal Learning Test – Revised (HVLT-R) to Measure Engagement in a Mixed Clinical Sample

Abstract Objective We created a forced choice recognition trial (FCR) for the HVLT-R, including recording completion time (FCompT), to evaluate the utility of combining completion time with accuracy scores when using performance validity tests (PVTs). Method Participants included 29 clinically referred patients at a large medical center who completed the HVLT-R in addition to multiple free-standing and embedded PVTs including the TOMM, Word Choice Test (WCT), Reliable Digit Span (RDS), and the Dot Counting Test (DCT) as part of a larger battery of neuropsychological tests in an outpatient setting. Data from the sample (M age = 64.79, SD = 13.86; M education = 15.65, SD = 2.47; 62.1% females) were analyzed using correlation and linear regression. Results The HVLT-R FCR trial correlated with the TOMM-10, r(19) = 0.75, p = 0.001, TOMM trial 1, r(17) = 0.75, p = 0.01, the DCT r(12) = −0.71, p = 0.01, and the FCompT, r(29) = −0.72, p = 0.001. The FCompT was correlated with RDS, r(28) = −0.46, p = 0.03, TOMM-10, r(19) = −0.64, p = 0.01, and TOMM trial 1, r(17) = −0.61, p = 0.01. FCompT significantly predicted FCR accuracy b = −0.72, t(29) = −5.41, p 0.001. Conclusions The HVLT-R FC and FCompT strongly correlated with free-standing and embedded PVTs. Data demonstrates that a longer completion time predicts poorer performance on FCR. Results demonstrate the value of measuring completion time for specific PVTs, in addition to providing support for the addition of a FCR trial to the HVLT-R.