Explain how the recruitment method used by Bocchiaro et al. (2012) in their study on disobedience and whistle-blowing may have introduced sampling bias.
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.