A developmental psychologist carried out research into the early vocabulary size of infants aged between 18 months and 24 months old who attended a large early learning center. The parents of these infants had already provided written consent for their children to participate.
Explain how the psychologist could obtain a random sample of 15 infants from this center to take part in the study.
Practise AQA A Level Psychology Scientific processes with exam-style questions for A Level Psychology. 689 questions, matched to the AQA A Level Psychology (7182) 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.
