Answer:
No research necessary
Explanation:
If you are socially isolated, with whom is it possible to be aggressive? Aggressive is only felt by those in close proximity to the one who behaves aggressively. If the aggressor is isolated, and the recipient of the aggression is isolated how are we to know whether the aggression actually exists. Geez... the scientists researching this must be smart guys. It's a bit like that old phrase: "If a tree falls in the woods (forest) and no one is there to hear it, does it make a sound?"
Aggression can also be mistaken for intensity. People with intensity are generally more involved in whatever it is they are partaking in. Often people who are less involved can feel discomfort, and will use aggression as their excuse that the more intense person has ill behaved. When in reality, it's just that they cant handle the situation, the intensity very well.
If you are aligning aggression with violence, then often isolation from society can be very good for you. Violence, despite common belief, is born our of thought. And thought is bred out of society for the most part. We all live in certain kinds of echo chambers in society, and that's where thoughts come from. They are the residual resonance of the the voices and actions and objects within your surrounds. Violence is stemmed out of seemingly inconsequential ideas based in separation. Which in and of itself is actually harmless, and necessary for life as we know it and survival as we understand it. But it is when someone makes a preference out of separation, or discrimination, that the train of violence begins. First at preference, then of vocalising, then of protection (action) , then of elimination. It is the latter stages of violence, that aggression can be recognised.
Therefore removing yourself from the trappings of society can definitely rejuvenate your thoughts, by allowing them to pick up on the objects, sounds and movements of for example, a forest for a decent amount of time, can remove preferential discrimination of society from your thoughts, and therefore violence and aggressive defense or acts based on that to be cleansed from your system.
BUT.
This must be an act one takes on themselves. The explanation for that takes another long answer, due to the nature of being human. But if one is forced into being socially isolated, it does not create the response necessary to remove aggression. It is in fact a form of aggression through elimination of a dis-preferred discrimination.