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.
186 exam-style questions on Edexcel A Level Psychology Research methods and skills, covering Research methods and skills. Each one has a worked solution and a mark scheme showing where the marks go.