Higgins, Glynn (2017) The role of cognition in stress: Relationship between perceived life stress, self-efficacy, optimism, self-esteem, positive affect, negative affect, and work stress. Masters thesis, Dublin, National College of Ireland.
Higgins, Glynn (2016) Perceived stress, self-efficacy, optimism, and social support: A study of Irish law enforcement officers and college students. Undergraduate thesis, National College of Ireland.