No one would argue the fact that men and women are physically different. The physical differences are rather obvious and most of these can be seen and measured easily. Men, who are essentially built for physical confrontation and the use of force, usually have greater upper body strength, build muscle easily, have thicker skin, and mostly use the left side of their brain. Women on the other hand, have a higher percentage of body fat, and a wider pelvis. Women also have four times as many brain cells connecting the right and left side of their brain. This provides physical evidence that supports the observation that men rely easily and more heavily on their left brain to solve one problem one step at a time. Women have more efficient access to both sides of their brain and therefore greater use of their right brain. Females can also focus on more than one problem at one time and frequently prefer to solve problems through multiple activities at a time. Nearly every parent has observed how young girls find the conversations of young boys "boring". Young boys express confusion and would rather play sports than participate actively in a conversation between five girls who are discussing as many as three subjects at once.
The psychological differences between men and women are less obvious, and can be difficult to describe. Yet these differences can greatly influence how we form and maintain relationships that can range from work and friendships to marriage and parenting.
Psychological tests have revealed patterns of gender difference. The average male finishes faster and scores higher than a female on a test that requires the taker to visualize an object's appearance after it is rotated in three dimensions. The same truth is applicable for map-reading tests, and for embedded-figures tests, which ask subjects to find a shape hidden within a larger design. The male gender is over-represented in the top percentiles on
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