A researcher investigates whether the colour of paper affects proofreading. Each pupil receives the same passage containing 20 spelling errors. Half of the pupils receive the passage printed on white paper and half receive it printed on pale yellow paper. Each pupil has three minutes to read the passage. The researcher records the number of spelling errors each pupil correctly identifies.
Identify the independent variable in this investigation.
Identify the dependent variable 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.