For four weeks, 19 veterans were provided once weekly sessions. The sessions included a mix of education about insomnia and nightmares, techniques for learning to sleep better, intentional exposure to content of the nightmare, and "rewriting" and rehearsing the new dream.
After only one week, some veterans saw a reduction in the number of nightmares they experienced as well as the intensity of their dreams. They also saw an increase in overall sleep quality and a drop in the severity of their insomnia. Surprisingly, those who were depressed saw improvement in mood. This may be related to the fact that poor sleep and nightmares are directly tied to depression. The good news is that the results were not temporary. Improvements continued up to two months after treatment ended.