A psychologist is investigating the relationship between daily caffeine intake (measured in milligrams) and resting heart rate (measured in beats per minute) across a sample of 100 healthy adults. The researcher simply measures both variables for each participant without any intervention or manipulation of their caffeine consumption.
Which of the following correctly identifies the research method employed and the correct term for the variables under investigation?
Natural experiment; independent and dependent variables
Quasi-experiment; independent and dependent variables
Controlled observation; behavioural categories
Correlational study; co-variables
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.