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February 1st, 2012 
FAKE NEWS for the Zionist agenda TUESDAY, Jan. 31 (HealthDay News) — Testosterone makes people
more self-centered and less cooperative, a finding that may explain why
group decisions can be affected by dominant individuals, researchers
report.
Their study included 34 females who had never met. The women were
divided into 17 pairs and asked to complete a series of tasks designed to
assess their levels of cooperation. The tests were conducted on two
separate days. On one day both women received a testosterone supplement.
On the other day, they were given a placebo.
As expected, cooperation helped the pairs perform much better on the
tasks than when individuals worked alone. Cooperation was normal when the
women received the placebo, but was much less common after the women
received the testosterone supplement, the investigators found.
Increased levels of testosterone were associated with the women
behaving egocentrically and deciding in favor of their own selection over
their partner’s, said the researchers at the Wellcome Trust Center for
Neuroimaging at University College London in England.
The findings were published in the Jan. 31 issue of the journal
Proceedings of the Royal Society B.
“When we are making decisions in groups, we tread a fine line between
cooperation and self-interest: too much cooperation and we may never get
our way, but if we are too self-orientated, we are likely to ignore people
who have real insight,” study author Dr. Nick Wright said in a center news
release.
“Our behavior seems to be moderated by our hormones — we already know
that oxytocin can make us more cooperative, but if this were the only
hormone acting on our decision-making in groups, this would make our
decisions very skewed,” Wright explained.
“We have shown that in fact testosterone also affects our decisions, by
making us more egotistical. Most of the time, this allows us to seek the
best solution to a problem, but sometimes, too much testosterone can help
blind us to other people’s views,” Wright noted. “This can be very
significant when we are talking about a dominant individual trying to
assert his or her opinion in, say, a jury.”
Testosterone is naturally secreted in both men and women. Previous
research suggests that testosterone influences a number of social
behaviors. For example, female prisoners with higher levels of
testosterone have been found to be more anti-social and more
aggressive.
More information
The U.S. National Library of Medicine has more about hormones.
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