The findings published in Science Direct journal indicated that regular sleep disruptions are associated with difficulty in shifting one's attention away from negative information, which indicates that sleep is a part of what makes negative intrusive thoughts stick around and interfere with people's lives.

They explained that negative thoughts are believed to leave people vulnerable to different types of psychological disorders, such as anxiety or depression.

The researchers are further exploring this discovery, evaluating how the timing and duration of sleep may also contribute to the development or maintenance of psychological disorders.