If we assume that males and females are mentally different, what could have caused that difference? Today, woman are competing with men in every field, but still they are different. Women are more sensitive, concerned and caring. Men are strong, bold and stable. This would be a result of natural selection! Women are physically attached with offspring, so they might have assigned with the duty of giving attention to offspring. Men are less physically attached with offspring, so they might have assigned with the duty of protecting and gathering food. The duties of males and females might have brought differences in their psychologies!