Piliavin et al. Flashcards
Background
Murder of Kitty Genovese when no-one helped
Design
Independant measures
Method
Field experiment
Aims (4)
- Test diffusion of responsibility in real life settings
- Effect of type of victim and race of victim on speed of helping, frequency of helping and race of helper
- Effects of modelling in emergency situations
- Relationship between size of group, frequency and latency of helping response with a face to face victim
Diffusion of responsibility (4)
- As group size increases, the amount of helping behaviour decreased
- when more people are present, the less likely a person is to help
- responsibility is shared
- example is Kitty Genovese case where they thought other people would help
Sampling technique
Opportunity
Experimenters details
Students from Columbia university (four teams)
- four male victims
- four male models
- eight female observers
Standardised procedures (4)
- same train journey
- victims fell the same way
- victims wore the same clothes
- each team member stood in the same place
Apparatus (3)
- Clothing worn by the victim- same jacket and slacks
- ill victim carried a black cane
- drunk victim smelled of alcohol and carried a liquor bottle covered in a brown bag
Sample size
4,450
Time and date when test was done
11am to 3pm
April to June
Number of people in the carriage
43
Mean number of people in the critical area
8.5
Race of sample
45% black
55% white
Observer 1 records (2)
- sex, race and location of passengers in the critical area
- total number of people that went to help and their location
Observer 2 records (2)
sex, race and location of people in the adjacent area
- time taken for the first observer to help
Both observers record
- comments made by the passengers sitting next to them
When does the victim collapse
70 seconds after the train starts
What are the four model conditions
critical early
critical late
adjacent early
adjacent late