Self-efficacy as a Mechanism of Action of Imagery Rehearsal Therapy's Effectiveness: An Exploratory Mediation Analysis.
The Journal of Nervous and Mental Disease October 1, 2018 Andréanne Rousseau, Mylène Dubé-Frenette, Geneviève Belleville
Imagery rehearsal therapy (IRT) increases self-efficacy about dreams and nightmares in victims of sexual assault with recurring nightmares, but this increase does not explain the therapy's effectiveness on insomnia and sleep quality. Thirty-five participants were randomly assigned to IRT or a control condition. IRT predicted greater self-efficacy about dreams, which in turn predicted improvement in insomnia, and greater self-efficacy about nightmares predicted better sleep quality. However, self-efficacy was not a significant mediator of IRT's effects on these outcomes, suggesting it may not be a primary mechanism of action.