take a study where subjects were shown videos of people in pain, said to be suffering from AIDS. Some of these individuals were described as having been infected through intravenous drug use, while others were described as getting AIDS through a blood transfusion. People said that they felt less empathy for the person who became infected through drug use—and their neural activation told the same story: When they viewed this individual, they had less activation in brain areas associated with pain, such as, again, the anterior cingulate cortex. And the more subjects explicitly blamed the drug
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