Applying intervention mapping to improve the applicability of precious memories, an intervention for depressive symptoms in nursing home residents

Precious memories (PM) is a life review intervention for depression in older adults with no to mild cognitive decline that has been implemented in multiple nursing homes (NHs) in the Netherlands. Previous research suggested its relevance but questioned its applicability. Therefore, this research aimed to (1) investigate the applicability of PM, and (2) increase its applicability, if necessary. Intervention mapping (IM) was used to achieve these goals: process evaluation through semi-structured interviews with psychologists (n = 11) and clients (n = 2) to identify potential improvements for PM and to set an improvement goal (IM-step 1); three focus groups with stakeholders (n = 20) to specify behaviors necessary to reach the improvement goal (IM-step 2); and selection of behavior change techniques and applications to facilitate attainment of these behaviors (IM-step 3). Results showed that psychologists perceived a high drop-out rate, which was partly due to PM being provided to clients that did not belong to the target group. Although PM was generally considered relevant, psychologists articulated its longer-term effects should be improved. To improve PM’s applicability, concrete maintenance strategies were developed aiming to maintain clients’ well-being by stimulating positive contact with others. Future research must pilot, implement and evaluate these strategies.