AP Psychology Exam Sample Test

Try 5 free practice questions with instant feedback. See how ready you are.

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Sample Questions

Question 1

What is the difference between the independent variable and the dependent variable in an experiment?

Answer: The independent variable is the factor the researcher manipulates, while the dependent variable is the outcome that is measured to see if it changed as a result.

Question 2

What is the purpose of random assignment in an experiment?

Answer: Random assignment distributes participants into experimental and control groups by chance, minimizing pre-existing differences between groups so that results can be attributed to the independent variable.

Question 3

What is a confounding variable?

Answer: A confounding variable is an uncontrolled factor other than the independent variable that may influence the dependent variable, threatening the internal validity of the experiment.

Question 4

What is the difference between a single-blind and a double-blind experiment?

Answer: In a single-blind experiment, participants do not know which condition they are in; in a double-blind experiment, neither the participants nor the researchers interacting with them know who is in which condition, reducing both participant and researcher bias.

Question 5

What is the placebo effect?

Answer: The placebo effect occurs when participants experience real changes in their behavior or condition simply because they believe they are receiving a treatment, even though they received an inert substance or sham procedure.