Psychologyspeaking topic

A crowd watches someone collapse and nobody steps in; everyone assumes somebody else will. Why does a crowd reduce helping instead of multiplying it? When 'someone' is around, why does 'I' disappear?

the bystander effect, diffusion of responsibility

practice with this topic

Set the timer (5-30 min), take 20 seconds of prep if you like, start talking. Jot your thoughts onto the sticky-note board.