You are free to--science is not absolute and can always be proven wrong--but we have strong evidence that more testosterone does indeed cause more aggression or tendency towards violence. — JustSomeGuy
What I am attempting to convey is that this aggression can also be influenced by
oestrogen. While I agree that testosterone can be a mediator for male aggression, oestrogen and its metabolites can also stimulate or inhibit neurons that make one more or less sensitive to stimuli from other neurons and thus can change ones mood (what you have referred to as 'irrational' whereas the word you probably should be saying is 'irritable'). It actually remains unknown as to the extent of the effect between either physiological/biological and social on our aggressive behaviour.
Poor sleeping patterns can also amplify aggression through fatigue and even depression/anxiety. While molecular mechanisms can underlie aggressive behaviour, my concern is sociological and not biological.
Just as much as drugs and alcohol can exasperate the symptoms of someone who has pre-existing mental health condition, both men and women are impacted by hormonal and other physiological fluctuations because of defective neural circuits psychologically; regions like the prefrontal cortex, amygdala, hippocampus, hypothalamus, ventral striatum and other areas of the brain that regulate emotions are not male only or female only. Any functional abnormalities increase the susceptibility for impulsive aggression and violence and this is
gender-neutral considering both men and women have the same brains. How these brains develop - our childhood, upbringing, diet/health etc - together with the social and environmental impact can influence or moderate our aggressive behaviour. A man who punches a man is no different to a woman who slanders a woman; both are forms of aggression.
My problem is how this aggression can manifest and that latter is largely social. Men somehow appear justified for being aggressive and women are justified for being irrational and it is
this that I have a problem with. First of all, I believe the word we should be using to justify women' behavioural changes due to menstrual cycle as irritable and not irrational, as per the following definitions:
Irrational: Not logical or reasonable.
Irritable: Having or showing a tendency to be easily annoyed or made angry.
But this is not a linguistic problem in my opinion, it is a cultural one where people generally respond to women' emotional changes as lacking any rational 'ought to be' behaviour. Women are not supposed to present themselves as feeling agitated in as much as men are supposed to; it is not the way women are supposed to behave (so unlady-like) just as much as men are feminine and weak if they are pacifists. So aggressive women can appear - socially - to be calm, respectful and lady-like but underlying their behaviour is nasty, vicious and aggressive because the social conditions allow it (office gossips, for instance). Conversely - and more problematic - is when you look at clusters of behaviour in demographics where women experience hysteria where the prevalence of somatization disorders tend to be aligned with high levels of domestic violence, both of which are 'normalised' behaviour. These pathological symptoms and even other concepts like masochism or neurosis become attributed exclusively to women rather than as a result of other culturally entrenched behaviours such as discrimination, violence, lack of education, restrictions of movement etc. So, the woman is temporarily 'irrational' which is merely a way of silencing her way of attempting to articulate her frustrations.
For what it's worth, though, I've had long-term romantic relationships with 4 women in my life who I have lived with for varying amounts of time, and every one of them displayed what I would characterize--and what they also referred to--as irrational behavior.
I also grew up with a mother and three sisters, and every one of them have many times addressed the fact that when they have PMS, they are irrational. Their words. — JustSomeGuy
You said it yourself, 1 in 4 of your partners have behaved differently and while it can certainly be biological; i.e. that girlfriend could have had endometriosis and so her hormonal fluctuations could have been extreme, this is not the case in general. Also, note the following quote:
"Listen to people when they are angry. Because that is when the real truth comes out."
Although, I kind of saw an image of you with a quizzical look being surrounded and sandwiched by so many ladies.
:P