The violent hormone?

[Dr.Stein]

Well, you guys seem forget the most important one: adrenalin It is all about hormone to fight and to cope the stressor.

A little bit correction, testosteron, or to be precise, androgen only generates aggressiveness obviously in animals to show the social hierachy including to get female(s) to start a fanily. In human, androgen mainly plays a role in sexual behavior and secondary sexual characteristics. Though some individual shows a sexual aggressiveness but it is just a case, means that it is not the role of the hormone itself. Adrenalin affects that case much.

[iri_black]

Dr. Stein to the rescue, as always....