The Relationships among Expectancy, Hypnotizability, and Treatment Outcome Associated with Eye Movement Desensitization in the Treatment of Post-Traumatic Stress Disorder
Date of Award
Doctor of Philosophy
Dr. Richard Spates
Dr. Malcolm Robertson
Dr. Patricia Meinhold
Dr. William Brooks
A pre-test, post-test comparison group design was utilized to assess the effectiveness of two interventions on symptoms associated with Post-Traumatic Stress Disorder. Subjects were randomly assigned to one of two treatments: Eye Movement Desensitization and Reprocessing (EMDR) or structured writing sessions. A standardized diagnostic interview was used to screen subjects and provide diagnosis and symptom profile at intake and one-month follow-up. Standardized self-report measures were used to assess treatment outcomes. Repeated measures ANOVA revealed no significant differences between the two treatments. Both treatments were effective in significantly reducing post-traumatic symptoms at post-test and follow-up, although slightly different patterns were evident. EMDR subjects tended to evidence a larger reduction in symptoms immediately after treatment, while subjects assigned to the writing condition evidenced more gradual improvement, which continued between post-test and follow-up periods. Measures of subject expectations regarding treatment effectiveness revealed no statistical correlation to treatment outcome. Similarly, hypnotic susceptibility was found to be unrelated to the effectiveness of either treatment.
Largo-Marsh, Lisa Kimberly, "The Relationships among Expectancy, Hypnotizability, and Treatment Outcome Associated with Eye Movement Desensitization in the Treatment of Post-Traumatic Stress Disorder" (1996). Dissertations. 1719.