[1]Men and women show differences in behaviour because their brains are physically distinct organs, new research suggests. Male and female brains appear to be constructed from markedly different genetic blueprints.
[2]The differences in the circuitry1 that wires them up and the chemicals that transmit messages inside them are so great as to point to the conclusion that there is not just one kind of human brain, but two, according to recent neurological2 studies.
[3]Men may be from Mars and women may be from Venus, and since the American psychotherapist3 John Gray wrote his famous book, in 1992, on the idea, it has been a commonplace to think of men and women as being from different planets in terms of their emotional responses.