A psychologist is planning a replication study on the impact of sleep deprivation on reaction times. Decades of previous research consistently demonstrate that sleep deprivation slows down reaction times.
Should the hypothesis for this replication study be directional or non-directional? Explain your answer.
Practise AQA A Level Psychology Scientific processes with exam-style questions for A Level Psychology. 689 questions, matched to the AQA A Level Psychology (7182) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
