Which of the following best describes the sampling technique used in Bocchiaro et al.'s (2012) study on disobedience and whistleblowing?
opportunity sampling
random sampling
self-selected sampling
systematic sampling
128 exam-style questions on OCR A Level Psychology Responses to people in authority, covering Milgram (1963): Obedience and Bocchiaro et al. (2012): Disobedience and whistle-blowing. Each one has a worked solution and a mark scheme showing where the marks go.