Callum is investigating cooperative and solitary play choices made by toddlers and decides to use the observational method. For one 15-minute recess session, he observed the play categories of children in a local nursery's outdoor yard. Callum gathered quantitative data during his observation.
Explain two improvements Callum could make to his investigation.
Practise Edexcel A Level Psychology Methods with exam-style questions for A Level Psychology. 638 questions, 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.