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that and courage are deep themes for males and targeting them can help him express himself verbally,.e. Rape proclivity among males. "The genetical evolution of social behaviour. Among other adaptations, men's psychology has also developed to directly aid men in such intra-sexual competition. Tracy, 18, called his to say he was not doing well in college. Gradually, though, she said, he became increasingly angry. Even neuro-scientists at the National Institute of Mental Health have begun to look at the phenomenon from a research viewpoint, inspired by the number of men returning from war with severe depression.

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Princeton, NJ: Princeton. Journal of Avian Biology. Therefore, women see finding a mate with a lot of resources as a channel to gain access to these resources. Gray matter concentrates activity in one or more splotches of the brain (areas of activity) while white matter spreads activity throughout the brain. Schürch, Roger, Roger Taborsky, Barbara (2005).

Sexual economics: Sex as female resource for social exchange in heterosexual interactions. Alternatively, another study shows that men are more promiscuous than women, giving further support to this theory. Therefore, the sex that invests less in offspring will compete among themselves to breed with the more heavily investing sex. Importantly, studies have also suggested that humans are susceptible to sexual imprinting. Use parallel play,.e. However, there are other ways in which males invest in their offspring.