Liam wanted to investigate young children's toy preferences in a natural environment. He placed wooden building blocks and interlocking plastic bricks in the free-play corner of a nursery. Liam sat behind a one-way mirror and observed which toy type the children chose to play with first.
Liam's results are shown in Table 3.
| Gender of child | Wooden building blocks | Interlocking plastic bricks |
|---|---|---|
| Boys | 7 | 3 |
| Girls | 2 | 6 |
Identify the type of observation used by Liam in his investigation.
66 exam-style questions on Edexcel A Level Psychology Research methods and skills, covering Research methods and skills. Each one has a worked solution and a mark scheme showing where the marks go.