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.
59 exam-style questions on AQA A Level Psychology Piaget's theory of cognitive development. Each one has a worked solution and a mark scheme showing where the marks go.