The psychology of heroism and altruism

“What’s the psychology of heroism? Is extreme self-sacrifice the result of a pained calculus, a weighing of desire and obligation, or an instinct? (Which would be more heroic? Does it matter?)”

http://​​www.slate.com/​​articles/​​health_and_science/​​medical_examiner/​​2014/​​10/​​psychology_of_heroism_and_altruism_what_makes_people_do_good_deeds.single.html