Read the following hypothesis.
H1H_1H1: "University students who sleep for fewer than 6 hours the night before a cognitive assessment will achieve significantly lower scores on a standard 20-item recall test than university students who sleep for 6 or more hours."
What is the independent variable (IV) in this hypothesis?
university-based or distance-learning students
scores on a standard 20-item recall test
sleeping fewer than 6 hours, or 6 or more hours
high or low academic anxiety levels
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.