By the sizes the brain of the man exceeds women's for 20 - 25%. Because of this and gray substance which is contained in the man's brain on average 200 grams more. The development of the departments of a brain which are responsible for rational and logical thinking at men also surpasses women's.
Women and men have different hormones. The main men's hormone - testosterone, women's - estrogen. And if the first is synthesized at men during puberty and continues to be synthesized all life, then the second - is cyclic and its development is connected with a female monthly cycle. At the first stage of a cycle there is its peak secretion, at the second stage the concentration is normalized, and at the third stage of its quantity begins not to get. The unstable emotional background at individuals of the weaker sex is also explained by it. However with approach of a climax at women the situation changes.
Such prevoznosheniye is connected by the man's nature over the woman with need of the woman to be disconnected from routine everyday tasks and to plunge into creation of family and education of children.
So, all this says that the man it is smarter than women. But such conclusion should not force ladies to despair. Women have advantages too! Since early years at boys the visual centers, and acoustical are formed only then at first. Women have return history. Girls, still sometimes without understanding word meaning, is already able to distinguish voice intonation. It makes future mummies more sensual and attentive to human experiences.
The same concerns the attitude of men and women towards romanticism and sex. As the main catalyst hormones act again. At the same time even dynamics of synthesizing of hormones differs. Process of increase of concentration of the hormones which are responsible for sexual excitement at women smooth, measured. Also the same sharp slowdown is peculiar to men sharp races. At the same time such hormones as prolactin (stimulates a lactation and allocation of milk, fills with tenderness, awe and desire to embrace) and vasopressin (stimulates work of a uterus) are at of both sexes. However if at women they perform the direct function, then at men they jump out directly a brain zone. Such inflow of "unclear" hormones just blows up to it the head and unsettles it. Having exhaled "it was abruptly" it is turned off, beginning to snuffle with pleasure.
Therefore you should not take offense at "callousness of this guy". Against the nature, as they say, you will not trample.
We are different and that between us more mutual understanding needed to be remembered it constantly.