Montague Ullman was a psychiatrist, psychoanalyst and parapsychologist who founded the Dream Laboratory at the Maimonides Medical Center in Brooklyn, New York and for over three decades promoted public interest in dreams and dream sharing groups.
Ullman resigned from Maimonides in 1974 and, since then, was engaged in work on dreams and dreaming. He was in the forefront of the movement to stimulate public interest in dreams and to encourage the development of dream sharing groups. Working in a small group setting that he believed to be both safe and effective, Ullman spent the last three decades of his life leading such groups both in the United States and overseas.
The picture target experiments that were conducted by Krippner and Ullman, were criticized by C. E. M. Hansel. According to Hansel there were weaknesses in the design of the experiments in the way in which the agent became aware of their target picture.
Only the agent should have known the target and no other person until the judging of targets had been completed, however, an experimenter was with the agent when the target envelope was opened. Hansel also wrote there had been poor controls in the experiment as the main experimenter could communicate with the subject.