A-13 The Association of Specific Depression Factors and Cognitive Performance in Older Adults
Abstract Objective This study investigated whether particular dimensions of depression measured by the Geriatric Depression Scale (GDS) predicted memory and executive function performance in older adults. We hypothesized that the worry dimension would significantly predict both memory and executive function scores given findings from previous studies (De Vito et al., 2017). Method Participants included 534 individuals ages 50 through 85 (M = 63) from the Nathan Kline Institute’s Rockland community sample. The Rey Auditory Verbal Learning Test (RAVLT) was used to assess memory and the Tower Test subtest of the Delis-Kaplan Executive Function System (D-KEFS) assessed executive functioning. To assess different dimensions of depression, we computed variables for six dimensions of the GDS using the factor model validated by Adams et al. (2004). Results Regression analyses revealed that, controlling for age, none of the GDS factors significantly accounted for performances on RAVLT short or long delayed recall tests. The worry factor significantly predicted RAVLT Learning Trial 1 scores (β = −0.28, p < 0.05). Worry (β = −0.16, p < 0.05) and agitation (β = −0.18, p < 0.05) were the strongest predictors of total achievement scores on D-KEFS Tower Test. Conclusion These findings represent a deviation from expectations that depression symptoms would predict short and long-delay memory performances in an aging population. The particular role of worry in our other variables augments De Vito et al.’s (2017) findings, as we found that worry predicted short-term memory and executive functioning. These results demonstrate the importance of addressing worry symptoms in older adults for healthy executive functioning.