Primitive instinct rehearsal theory of dreaming

Two researchers have postulated that dreams have a biological function, where the content requires no analysis or interpretation, that content providing an automatic stimulation of the body's physiological functions underpinning the human instinctive behaviour. So dreams are part of the human, and animal, survival and development strategy.
Prof Antti Revonsuo (Turku university, Finland) has limited his ideas to those of ‘threat rehearsal’, where dreams exercise our primary self-defence instincts, and he has argued this cogently in a number of publications.


Keith Stevens extends the theory to all human instincts, including threats to self, threats to family members, pair bonding and reproduction, inquisitiveness and challenges, and the drive for personal superiority and tribal status. He categorises dreams, using a sample of 22,000 Internet submissions, into nine categories, demonstrating the universal commonality of dream content and instinct rehearsal. It is postulated that the dream function is automatic, in response to the content, exercising and stimulating the body chemistry and neurological activity that would come into play if the scenario occurred in real life, so that the dream does not have to be remembered to achieve its objective.
It is argued that, once a dreamer has experienced a threat in a dream (either to self or a family member), his ability to confront and overcome a real life threat is then enhanced, so that such dreams, in both humans or animals, are an aid to survival. The threat rehearsal can be specific, for instance, an attack from a savage dog, but it can also be general, in that the threat response physiology is activated and reinforced whilst dreaming.
For human reproduction, the theory states that dreams of pairing, bonding and mating stimulate the reflex to reproduce the species, with an emphasis on dreams that promote the principle of selection; the desire of the individual to find the best mate and to achieve the optimum genetic mixing. In that respect, the dream function conflicts with human values of fidelity and mating for life. Specifically, young women dream often of being pregnant and giving birth, overwhelmingly positive dreams that directly stimulate the urge to reproduce.
In terms of status, dreams of being superior to others, or conversely to being inferior, come in the two extremes. They stimulate the dreamer’s determination to improve their status within their immediate human hierarchy, either through the positive physiology of success, or the negative physiology of failure. Hence, dreaming promotes competition, the survival of the best and fittest, and a steady advance of the human species.
Finally, other dreams stimulate the determination to explore and enquire, through the extremes of exhilarating dream achievements (positive physiology) or frustrating obstructions and barriers. The latter stimulates a determination not to give up in a quest, so that, in life, the individual and the species move forward. For the dreaming wildebeest, it may be a rich pasture over the hill; for the human dreamer it may be splitting the atom.