Julian investigated whether there was a relationship between a person's level of self-reported 'digital eye strain' and their performance on a standardized visual processing speed task.
Participants completed a self-report symptom questionnaire to assess their level of digital eye strain. The questionnaire was scored out of 20, with 20 indicating severe digital eye strain symptoms.
They also completed a computerised visual processing speed task, where their performance was measured by a score out of 50, with 50 representing highly efficient visual processing.
Write a suitable non-directional hypothesis for Julian's investigation.
Explain why a Spearman's rho test would be appropriate to analyse the relationship between these two variables.
Practise Edexcel A Level Psychology Methods with exam-style questions for A Level Psychology. 100 questions, matched to the Edexcel A Level Psychology (9PS0) 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.