Dr. Harrison conducted a laboratory experiment to investigate the effect of environmental noise on reading comprehension in working memory. He used a repeated measures design where 12 volunteer colleagues from his own research laboratory were asked to read a dense scientific passage with loud construction noise playing in the background, and then a similar passage in absolute silence, before completing a comprehension test.
Explain one improvement that could be made to Dr. Harrison's experiment.
186 exam-style questions on Edexcel A Level Psychology Research methods and skills, covering Research methods and skills. Each one has a worked solution and a mark scheme showing where the marks go.