A researcher investigates conservation in two matched groups of 24 children aged five and six. Each child watches equal amounts of squash being poured into two identical glasses. The squash from one glass is then poured into a taller, thinner glass.
In Procedure A, a child is recorded as conserving if they say that the two glasses still contain the same amount. In Procedure B, a child is recorded as conserving only if they also explain their answer logically, for example by stating that no squash was added or taken away.
The results are shown in the table.
| Procedure | Said the amounts were the same | Of those saying the amounts were the same, gave a logical explanation | Recorded as conserving |
|---|---|---|---|
| A | 15 | Not asked | 15 |
| B | 14 | 6 | 6 |
Using the results, explain one advantage and one disadvantage of Procedure B as a way of measuring conservation.
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.