Identify the sampling technique used to recruit the participants in the study by Bocchiaro et al. (2012) and state one limitation of using this technique in this research.
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.