An occupational psychologist is investigating the relationship between daily caffeine intake (measured in milligrams via a food diary) and subjective workplace alertness (measured using a newly designed 15-item self-report questionnaire). They adopt a correlational research design.
Explain how the researcher could assess the concurrent validity of this new self-report questionnaire used to measure workplace alertness in this study.
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.