Examlex
The trait of extroversion has been validated with demonstrations that introverts and extroverts show some different patterns of brain responses.
Bystander Intervention
The phenomenon where individuals witnessing an emergency or crime are more or less likely to assist the victim based on the presence of other witnesses.
Yell "Fire!"
A metaphorical expression or a literal action that suggests causing a sudden alert or panic, often used in discussions of human reactions in emergency situations.
Kitty Genovese
Kitty Genovese was a young woman whose 1964 murder in New York City became famous due to the widely reported (though later questioned) lack of intervention by numerous witnesses.
Reciprocal Altruism
A behavior in which an organism acts in a manner that temporarily reduces its fitness while increasing another organism's fitness, with the expectation that the action will be reciprocated in the future.
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