Saira conducted a laboratory experiment to investigate the effect of word length on short-term memory capacity. She used a repeated measures design where 15 undergraduate psychology students from her own university department were asked to recall lists of 5 short words (one syllable) and then 5 long words (four syllables).
Explain one improvement that could be made to Saira's experiment.
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.
