During a study of cognitive development, a researcher demonstrates that two identical balls of clay contain the same amount of material. The researcher then rolls one of the balls into a long, thin cylinder. A child is asked if the two pieces still have the same amount of clay, and they correctly answer that they do.
Identify the cognitive concept demonstrated by the child's response and explain what is meant by this concept.
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.