A psychologist displays a recruitment notice at a leisure centre for an investigation into learning a new hand-coordination task. The investigation requires three sessions, and she accepts every adult who responds to the notice. Explain one strength and one limitation of the sampling method used in this investigation.
182 exam-style questions on OCR GCSE Psychology 7.1 Planning Research, covering 7.1.1 Hypotheses, 7.1.2 Variables, 7.1.3 Experimental Designs, 7.1.4 Populations and Sampling, 7.1.5 Ethical issues, and 7.1.6 Dealing with ethical issues and BPS Code. Each one has a worked solution and a mark scheme showing where the marks go.