Elena conducted a laboratory experiment to investigate the capacity of short-term memory. She used a digit-span test on a sample of 12 undergraduate psychology students from her own university.
Explain one improvement Elena could have made to her investigation.
Practise Edexcel A Level Psychology Research methods and skills with exam-style questions for A Level Psychology. 657 questions covering Research methods and skills, 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.
