Brenner offers a revised theory of dream psychology based on the structural theory. It assumes that the mental energy which is associated with the latent dream content activates various unconscious ego and superego functions, just as might happen during waking life. The dream work and waking mentation are characterized by the simultaneous interplay of mature ego functioning and primitive or infantile ego functioning. It is as a result of regressive alteration of the ego function of reality testing, in addition to the familiar characteristics of the dream work caused by ego and superego regression, that the dreamer believes what he dreams is not fantasy but reality. This view of dream analysis affords an aspect of unconscious conflict rather than merely an opportunity to identify an unconscious, infantile wish. A corollary of the author's view is that many other psychological data should be dealt with in parallel fashion to the dream, and would often yield similar results.