In the Subway Samaritan study by Piliavin et al., data collection relied on a team of two observers.
Describe the specific roles of Observer 1 and Observer 2, including the location of the observers and the types of data they recorded.
105 exam-style questions on OCR A Level Psychology Responses to people in need, covering Piliavin et al. (1969): Subway Samaritan and Levine et al. (2001): Cross-cultural altruism. Each one has a worked solution and a mark scheme showing where the marks go.