An aviation psychologist wants to investigate whether consuming a high-polyphenol blueberry extract drink before a flight simulation session affects the reaction times (measured in milliseconds) of commercial airline pilots during simulated emergency engine failures. The simulator facility, 'AeroSim Elite', trains 120 pilots aged between 25 and 60.
Identify the dependent variable in this study.
201 exam-style questions on OCR A Level Psychology Planning and conducting research. Each one has a worked solution and a mark scheme showing where the marks go.