A researcher is investigating prosocial behaviour in a nursery. She decides to observe and record a target child's interactions for a 15-second15\text{-second}15-second window at the start of every 2-minute2\text{-minute}2-minute interval over a 2-hour2\text{-hour}2-hour period.
Which technique is the researcher using to sample the child's behaviour?
Event sampling
Time sampling
Systematic sampling
Opportunity sampling
644 exam-style questions on OCR A Level Psychology Research methods and techniques. Each one has a worked solution and a mark scheme showing where the marks go.