A local council is conducting a multi-year study to investigate the effectiveness of a new household recycling campaign. They obtain a sample of 200 households by asking for volunteers via a post on a local social media group dedicated to 'Zero-Waste Living'.
Briefly explain one limitation of using this self-selected (volunteer) sample for this study.
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.
