A psychologist investigates whether pupils solve more anagrams in a warm room (24°C) than in a cool room (16°C). Twelve Year 10 pupils solve 20 anagrams in the warm room on Monday and a different set of 20 anagrams, matched for difficulty, in the cool room on Tuesday. Two of the pupils are absent on Tuesday.
Evaluate the use of a repeated measures design in this study.
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.