This paper employs a natural field experiment in the Netherlands to test whether individuals intuitively help strangers with different group identities. We implement time manipulations in an everyday task to stimulate intuitive versus deliberate decision-making and thereafter examine helpfulness...

We test whether humans are intuitively inclined to cooperate with or punish strangers using a natural field experiment. We exogenously vary the time available to help a stranger in an everyday situation. Our findings suggest that subjects intuitively tend to help but behave more selfishly as...