It is a subset of BDSM. In other cases, it can be intensely physical, sometimes crossing into sadomasochism. Those who take the superior position are called "dominants"—Doms male or Dommes female —while those who take the subordinate position are called "submissive"—or subs male or female. A switch is an individual who plays either role. Two switches together may negotiate and exchange roles several times in a session.
Verified by Psychology Today. Evolution of the Self. This series of posts on human sexual desire has uncovered many intriguing ironies and paradoxes. The best place to start this discussion is by pointing out that all of us, along with several other mammal species, appear to possess subcortical circuits for sexual dominance as well as submission.
Most people like this type of relationship because of the dynamic power involved. The Dominant leads, guides, and protects the submissive. The submissive is the baby girl or servant who pleases the dominant. For instance, the dominant can create a simple rule for the submissive such as asking for permission to go out on weekends. The dynamic may as well be a set of strict rules and complex responsibilities that make the dominant feel more in control of the body and mind of the submissive.