A desire to do good but expect a reward.
A desire to do good without expecting any rewards.
A desire to help.
Investigate reaction times to an emergency situation.
Investigate if helping behaviour was influenced by the number of people present.
Investigate why people helped.
Investigate factors affecting helping behaviour.
Helping the victim.
Convincing yourself the victim doesn't deserve help.
Being close to the emergency.
Leaving the scene.
In a New York train station.
On a bus in New York.
On a New York subway train.
11 am and 4 pm
10 am and 3 pm
10 am and 4 pm
11 am and 3 pm
Left the victim on the floor.
Helped the victim to his feet.
Encouraged someone else to help the victim.
26 and 35
20 and 25
30 and 40
37 and 42
Presence of a helping 'model'
Absence of a helping 'model'
Groups on the train earlier in the day.
Groups on the train later in the day.
The risk people take in helping someone in hope of gaining a reward.
The potential harm you will cause in helping someone.
The rate of response to an emergency situation when a reward is involved.
The response to an emergency situation on a cost-reward analysis of the situation.
Diffusion of responsibility.
Desire to do good.
Desire to remove a negative emotional state.
Desire to gain a reward.