A psychologist investigates whether seeing a countdown affects performance on a calculation task. One group can see a five-minute countdown on the computer screen, while the other group cannot see the countdown. Both groups have five minutes and use the same model of computer in the same room, following the same on-screen instructions.
Give two other ways in which the procedure could be standardised. Explain why standardisation matters in this experiment.
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.