Articles with the keyword: 
Pain Hurts More If Person Hurting You Means It
piggy submitted, created time 2 weeks 4 days (www.sciencedaily.com)
Researchers at Harvard University have discovered that our experience of pain depends on whether we think someone caused the pain intentionally. In their study, participants who believed they were getting an electrical shock from another person on purpose, rather than accidentally, rated the very same shock as more painful. Participants seemed to get used to shocks that were delivered unintentionally, but those given on purpose had a fresh sting every time 
The Neurochemistry of Forgiving and Forgetting
jerry submitted, created time 7 months 2 weeks (sciencenow.sciencemag.org)
A new study shows that the hormone oxytocin may spur us to trust others even after they have betrayed us by suppressing a region of the brain that signals fear. The findings could lead to a better understanding of social phobias and related disorders.
How we judge the thoughts of others
jane2007 submitted, created time 9 months 3 weeks (www.nature.com)
New research suggests we use the same brain region that we do when thinking about ourselves — but only as long as we judge the person to be similar to us. But this region does not become involved when second-guessing the opinions and feelings of those unlike ourselves. This may potentially helping to explain the causes of social tensions such as racism or religious disputes.
Paternity discrepancy -- society, trust and possible evolutionary basis
Darkfrog submitted, created time 1 year 8 months (men.msn.com)
This is a little less reputable than I usually prefer to post. It is mostly about social roles and trust issues, but it does address the evolutionary aspects of fatherhood. Mostly, I've just never heard of "paternity discrepancy" before. It refers to the phenomenon of a man raising a child that is not, despite his beliefs to the contrary, his genetic offspring. (Knowing adoptive fathers and stepfathers do not apply.)
The article quotes Dr
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