Exploring Variables Associated with the Effects of a Self-Administered Hypnosis Intervention for Improving Sleep Quality.

About two-thirds of college students rate their sleep as suboptimal which is associated with a variety of additional issues. Poor sleep is shown to follow certain pre-sleep cognitive activity that inhibits sleep onset and reduces sleep quality. Preliminary evidence suggests that a self-administered hypnosis intervention is feasible in improving sleep within a college student population, and the current study explores potential correlating variables to inform future mechanistic research. Twenty-two college students who self-reported poor sleep quality utilized a three-week self-administered hypnosis intervention while completing baseline and endpoint measures of sleep quality, insomnia symptoms, and psychological factors. Results indicated that participants experienced significant improvement with large effects in sleep quality (d = -1.21) and significant decreases in insomnia symptoms (d = 1.05) from pre- to post-intervention. Significant improvements were also observed on measures of pre-sleep arousal and worry. The results suggest that a self-administered hypnosis intervention may modulate pre-sleep cognitive activity associated with poor sleep quality.