Associations between Insomnia Severity, Perceived Stress, Mental Toughness, Dark Triad Traits, and Organizational Citizenship Behavior among Cadets of the Swiss Armed Forces.

Background: Compared to the general population, military personnel are at increased risk for insomnia and poor psychological well-being. The present study: (1) compared categories of insomnia severity between cadets of the Swiss Armed Forces (SAF) and previously published norms and (2) investigated the associations between insomnia and psychological well-being related to perceived stress, mental toughness, dark triad traits, and organizational citizenship behavior (OCB).

Methods: A total of 216 cadets of the SAF (mean age: 20.