Lewis Study

The Lewis Study, conducted by psychologist David Lewis, investigated how sleep deprivation affects mood, performance, and alertness. Participants were kept awake for extended periods, and results showed that lack of sleep impairs cognitive function, reduces mood quality, and decreases alertness. The study highlighted the importance of adequate sleep for optimal mental and emotional functioning, emphasizing that even partial sleep deprivation can negatively impact everyday tasks and well-being. It has contributed to understanding sleep’s critical role in maintaining overall health and performance.