Imbalance in psychology may sound like a vague term, however, the implications are profound. In the area of Evolutionary Biology, physical asymmetry is known to be a sign of disease, and therefore becomes a stimulus for other animals of a species to avoid contact with the particular animal. In an extreme example, perhaps there is a missing limb in the animal, which might signal the presence of infection, or for example, a lack of the ability to fight alongside other animals of the species against predators (or perhaps the loss of the limb in the first place, might be inferred to be a demonstration of the poor, innate ability to fight against predators successfully.)
Why would we assume that the functioning of the mind is any less an indicator of survival ability and social value - in a species as advanced as ourselves, and prone to use tools and technology to protect ourselves?
We have all had the experience of interacting with people who are very "imbalanced" in some area of their psychological function, and the instinctual reaction is often avoidance of such people, likely for the same evolutionary reasons.
There are some scientifically-based details and principles of philosophy that support our use of this principle. Aristotle talked about "The Golden Mean" in his lectures, in which he claims that for every human virtue, there are not one, but two vices - one of excess, and one of deficit. For example, humor is a human virtue, yet "buffoonery" is too much humor to match the social context, and "boorishness" is too little humor to match the social context, or "humorlessness." This places the virtue of humor at the center of a spectrum (which we could call, "balance") and both "boorishness" and "buffoonery" are on the two opposite ends of the spectrum (they are "imbalance".)
All through Romantic Dynamics, such spectra exist both for the purpose of showing us psychological balance, versus imbalance, health versus unhealthy behavior, which tends to be the same as maturity versus immaturity, and can extend even into models of spiritual growth versus decline.
However, all the working parts of psychology being placed on a spectrum for each, give us an exceptional power to measure and quantify the variables involved in one's behavior, their romantic skills, and their compatibility with suitable mates. This feature of Romantic Dynamics also does a miraculous thing that can be called a kind of "Quantum Psychology."
This feature of Romantic Dynamics also does a miraculous thing that can be called a kind of "Quantum Psychology." In Quantum Physics, matter can be envisioned as either a particle at a specific place in space, or as a wave that cannot be located at a specific place, but has particular properties. Extending this principle to psychology accomplishes a very needed property in our studies: that people can simultaneously be labelled in the various components of their psychology, having certain properties (like a wave), and yet at the same time we can also respect and honor them as unique individuals, coming from a very personal and independent position in terms of the details of their lives' stories, beliefs, preferences, tastes, skills and identity as compared to every other person who has ever lived (more like a particle.)