Dr Patel wanted to investigate memory recall in primary school children. To obtain his sample, he sent a letter home to all parents of children at Elmwood Primary School, asking for volunteers to participate in a weekend memory game study. Ten parents replied agreeing to let their children take part.
Identify the sampling technique used by Dr Patel in his investigation.
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.