Shapiro has enjoined clinicians not to use eye movement desensitization and reprocessing (EMDR), a treatment for traumatic memories, unless trained by her organization. Some have objected, especially on the grounds that sole-source training may interfere with independent research. However, those trained in EMDR agree that such training is important. Research findings have been consistently positive when treatment was conducted according to the full EMDR protocol taught by Shapiro, and negative only when that protocol was not used. Shapiro's stance has supported the effectiveness and research integrity of EMDR.