Stanley Milgram's experiment was a controversial test of human psychology that shed light on the limitations of free will and obedience to authority.

The bystander effect occurs when the presence of others discourages an individual from intervening in an emergency situation, against a bully, or during an assault or other crime.The greater the ...

This phenomenon—known as the “bystander effect”—can seem relatively harmless in such situations. A dropped pencil or a stranded traveler might not suffer much from our inaction.