Social Approach 3 - Piliavin et al. Flashcards
(53 cards)
When was Piliavin?
1969
What was the aim of Piliavin?
To research bystander effect in a natural setting and investigate the effect of four situational variables on helping behavior.
What triggered the research into the bystander effect?
The murder of Kitty Genovese in NYC in 1964.
What did Darley and Latane (1968) find?
Bystanders who believed that there were other people witnessing an emergency were significantly less likely to help than those who believed they were alone in hearing the event.
What do Darley and Latane’s findings support?
The diffusion of responsibility hypothesis.
What do Schopler and Matthews (1965) find?
The bystander effect seems to occur more when victims are not seen as responsible for their circumstances.
What was the experiment type?
Field experiment.
What was the experiment design?
Independent measures.
What were the 4 IVs?
Type of victim (drunk or ill)
Race of victim (black or white)
Behavior of a model (close/distant to victim, helped early/late)
Size of the group of bystanders (naturally occurring depending on the size of the train.
What was the DV?
The level of bystander helping.
What was the DV operationalised as?
Time taken for the first passenger to help as well as the total number of passengers who helped.
What was recorded in addition to the DV?
The race, gender, and location in the carriage of each helper.
Verbal remarks made by passengers during the event.
Where and when was the study done?
NYC subway between Harlem and the Bronx on weekdays between 11am and 3pm.
What was the type of sample?
Unsolicited or opportunity sample.
What was the size and racial balance of the sample?
~4450
45% black and 55% white
What was the mean number of passengers per carriage?
43
What was the mean number of passengers in the critical area?
8.5
Who carried out the study?
4 teams of student researchers.
Who was a part of each team of researchers?
2 male and 2 female students.
What did the female researchers do?
They sat in the area next to the critical area and observed the passengers and recorded data for each trial.
What roles did the male researchers have?
Victim and model.
Where were the victim and model placed?
The victim stood at the pole in the centre of the critical area and the model remained standing throughout.
How long was the gap between the 2 stations?
7.5 minutes.
When did the victim move and what did he do?
~70 seconds into the journey, the victim would stagger forward and collapse.