 There have been multiple small controlled trials of four to eight weeks of EMDR in adults as well as children and adolescents.EMDR reduced PTSD symptoms enough in the short term that one in two adults no longer met the criteria for PTSD, but the number of people involved in these trials was small and thus results should be interpreted with caution pending further research.There was not enough evidence to know whether or not EMDR could eliminate PTSD in adults.