According to Abigail Marsh, what did researchers find when they compared the brains of highly altruistic people with those of people who displayed psychopathic traits?
AHighly altruistic people showed greater sensitivity to other people's fear, while people with psychopathic traits showed less sensitivity.
BBoth groups showed unusually high sensitivity to other people's emotions.
CHighly altruistic people were less able to recognize fear because they focused primarily on their own emotions.
DThere were no meaningful differences in brain responses between the two groups.
AHighly altruistic people showed greater sensitivity to other people's fear, while people with psychopathic traits showed less sensitivity.
BBoth groups showed unusually high sensitivity to other people's emotions.
CHighly altruistic people were less able to recognize fear because they focused primarily on their own emotions.
DThere were no meaningful differences in brain responses between the two groups.