In the classic study by Piliavin et al. (1969) investigating helper behaviour, observers recorded the latency (the time elapsed in seconds) from when the victim collapsed until the first passenger offered assistance. What level of measurement is this latency data?
Interval\text{Interval}Interval
Ordinal\text{Ordinal}Ordinal
Ratio\text{Ratio}Ratio
Nominal\text{Nominal}Nominal
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.