A researcher wants to investigate how motivated adults in a town are to exercise. At 7am, she approaches adults using the town's outdoor running track and recruits the first 25 who agree to take part. Identify the sampling method and explain one limitation of using it.
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.