The ability to have control and consciousness in the dream
state, also known as lucid dreaming. According to Hereward
Carrington (in his book Higher Psychical Development, 1924)
dreamers can keep conscious control up to the moment of falling
asleep. He advises
When you have learned to do that, then construct before
yourself, mentally, a definite scene, which you must hold firmly
in mind. Then, as you are falling to sleep hold this scene before
you, and at the very last moment, before you fall asleep, consciously
transfer yourself into the scenein other words, step
into the picture; and if you have developed yourself to the requisite
point, you will be enabled to carry over an unbroken consciousness
into the dream state; and in this way you have a perfect
continuity of thought; there is no break in the
consciousness; you step into the dream picture and go on
dreaming consciously. That is the process of dreaming true,
and after this dream is fully enacted, then you should remember
perfectly all that has transpired during the sleep period.
In the book The Projection of the Astral Body by Sylvan J. Muldoon
and Carrington (1929), Muldoon remarks that these instructions
are in harmony with the method of dream control
used to induce the astral body to move out into space. An article
in the Proceedings of the Society for Psychical Research (vol. 26,
July 1913) records van Eedens experiments in dreaming true.
The British psychical researcher J. Arthur Hill vouches for the
truthfulness of the experiences in The Dreams of Orlow (1916),
by A. M. Irvine.
Muldoon, Sylvan J., and Hereward Carrington. The Projection
of the Astral Body. London Rider, 1929.