Dr. Aris is investigating whether there is a relationship between daily caffeine consumption (measured in milligrams) and self-reported sleep quality (rated on a scale of 0 to 100). To recruit participants, he posts an invitation link on a popular online video gaming forum, asking users to click through and complete his digital questionnaire. Thirty participants complete the online survey.
Explain one strength and one weakness of using this sampling method for Dr. Aris's study.
Practise Edexcel A Level Psychology Methods with exam-style questions for A Level Psychology. 638 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.