0171 <Objective Effort and Math Performance Predicted by Night-Time Awakenings and Total Sleep Time>

Introduction How do awakenings affect objective behavioral effort and performance? Participants with sleep problems characterized by frequent awakenings reported more severely impaired productivity (Zammit et al., 2010), greater absenteeism and presenteeism (Bolge et al., 2010), and those in a construction work-force who had more frequent attention and memory errors (cognitive failure) self-reported less safety compliance and more minor workplace injuries (Brossoit et al., 2018). The relationship between night-time awakenings, total sleep time, and next-day objective effort and math performance was assessed. Methods 60 undergraduate students were measured twice over three days. Sleep was determined by subjective next-day sleep diary. Time persisting on a Mirror-Tracing task (Calin-Jageman et al., 2015) measured effort exertion. Percent correct and time spent adding three numbers on an addition task assessed performance. Results For participants who reported nighttime awakenings (n = 34), those with more frequent awakenings spent less time completing the mirror-tracing trials (r = -.529, p = .001) and less accurately traced the shapes (r = -.449, p = .008). Math percent correct was not significantly correlated with hours of previous night’s sleep, however we found a weak negative correlation between average hours slept and average time spent working on the addition problems (r = -.304, p = .018). Conclusion Our findings suggest that night-time sleep interruptions, especially those experienced by people with sleep disorders like insomnia or apnea, negatively impact next-day exerted objective effort. This is particularly concerning in high-risk or mentally demanding fields, like medicine, long-haul driving, aviation, and child-care. Our findings suggest that methods assessing objective effort in those with awakenings will be productive, particularly in treatment studies. Support (If Any) N/A