Piliavin was inspired by the murder of a young girl, Kitty Genovese in New York in the 60s, 38 of her neighbours could hear her being attacked but no one did anything to help.
Social psychologists would argue the neighbours displayed the bystander effect, specifically diffusion of responsibility; there were other neighbours who could help so they didn't see it as their responsibility.
Previous lab experiments such as the smoke filled room by Latane and Darley found evidence for diffusion of responsibility; the majority of people don't ask for help when a room is filling with smoke because no one else does.
However, these experiments lacked ecological validity and did not explore helping behaviour in a realistic setting. Piliavin therefore wanted to investigate this further using a field experiment in a more natural situation, a train.
- 4 teams of researchers: 2 female observers, 2 males - one acting a victim, one a model (victims were all male, aged 26-35 years + dressed alike)
- Either smelled of liquor + carried a bottle wrapped in a brown bag or appeared sober + carried a black cane = acted identically (fewer drunk trials performed as male confederates didnt want to = lack of consistency in standardisation)
- Victim stood near a pole in critical area. after 70 secs, staggered forward + collapsed, remaining still on the floor
- at stop, team disembarked, changed platforms to repeat
FEMALE OBSERVERS RECORDED DV - ONE IN CRITICAL AEA + ONE IN ADJACENT = RECORDED VERBAL COMMENTS MADE
- more comments were made by passengers in drunk than cane condition + femal passengers made comments eg. 'its a mans job to help' + 'I'd help but I'm just not strong enough
This links to the social approach as the presence of other passengers influenced behaviour, in particular the nature of the victim; passengers were more likely to help an ill victim than a drunk victim.
The environment of the closed, confined space of the train carriage also influenced behaviour; passengers may have felt inclined to help as they couldn't escape the situation, which explains why Piliavin found no diffusion of responsibility.
-> females felt as though there was more risk involved with them helping the male confederates = showing some individuals do a personal cost/benefit analysis
-> same race helping =race determined higher levels of helping behav towards male confederate
Situational:
-> enclosed environment of train carriage means passengers couldn't escape situation entirely + could have contributed to why they helped
-> proximity to victim may have been a contributing factor