Maya wants to test the effect of environmental noise on selective attention. She asks her participants to complete a proofreading task in a quiet room, and then a similar proofreading task in a noisy room (with order of conditions counterbalanced).
Maya records the time taken (in seconds) by each participant to find all errors in both conditions to see if there is a difference in performance.
Explain which statistical test Maya should use to analyse her data.
638 exam-style questions on Edexcel A Level Psychology Methods. Each one has a worked solution and a mark scheme showing where the marks go.