A researcher tests 100 seven-year-old children individually using two conservation tasks.
Nothing is added or taken away in either task. A child passes a task only if they say the quantity is unchanged and explain their reasoning. The researcher classifies a child as able to conserve only if they pass both tasks.
| Result in number task | Passed liquid task | Did not pass liquid task |
|---|---|---|
| Passed number task | 58 | 17 |
| Did not pass number task | 9 | 16 |
Using the results, explain one advantage and one disadvantage of requiring a child to pass both tasks before being classified as able to conserve.
104 exam-style questions on OCR GCSE Psychology 2.2 Theories/Explanations, covering 2.2.1 Piaget's four invariant stages, 2.2.2 Assimilation and accommodation, 2.2.3 Object permanence, animism, egocentrism, 2.2.4 Decentration, reversibility, conservation; criticisms, 2.2.5 Cognitive Development research study: Piaget (1952), 2.2.6 Dweck's fixed and growth mindsets, 2.2.7 Willingham's learning styles and meaning; criticisms, and 2.2.8 Learning research study: Blackwell et al. (2007). Each one has a worked solution and a mark scheme showing where the marks go.