McSorley VE, et al. - In the Sleep Study of the National Social Life, Health, and Aging Project (NSHAP), a nationally-representative cohort of US older adults (2010–2015), researchers assessed if self-reported and actigraph-measured sleep are related to cross-sectional cognitive function and 5-year cognitive decline. With the survey adapted version of the multidimensional Montreal Cognitive Assessment (MoCA-SA), they determined cognition. Average MoCA-SA was 14.1 of 20 (SD, 3.6) in 759 subjects at baseline. They reported worse cognition and odds of 5-year cognitive decline (4 or more points) in relation to actigraph sleep disruption measures (wake after sleep onset, fragmentation, percent sleep, wake bouts). The strongest association was reported for wake after sleep onset. For males vs females, generally stronger longitudinal links were observed. There was little association seen between self-reported sleep and cognitive function.