A researcher presents a child with two identical parallel rows of six counters, evenly spaced. In full view of the child, the researcher spreads out the counters in one of the rows so it appears longer, and asks the child if the rows still contain the same number of counters.
Outline the cognitive concept Piaget was investigating using this type of task.
Practise AQA A Level Psychology Cognition and development with exam-style questions for A Level Psychology. 100 questions covering Piaget's theory of cognitive development, Vygotsky's theory of cognitive development, Baillargeon's early infant abilities, and Development of social cognition, 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.