A student conducted a cognitive psychology practical investigation into the word length effect on working memory. They recruited 15 undergraduate students using opportunity sampling. First, all participants listened to a list of 10 single-syllable words and immediately wrote down as many as they could recall. Then, the same participants listened to a list of 10 four-syllable words and immediately wrote down their recall.
Explain one methodological improvement the student could make to this practical investigation and explain how this would benefit the study.
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.
