Experimental Design
Psychology ⇒ Research Methods in Psychology
Experimental Design starts at 10 and continues till grade 12.
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See sample questions for grade 12
A researcher conducts an experiment to test the effect of caffeine on reaction time. She finds that participants who received caffeine had faster reaction times. What is the dependent variable?
A researcher finds that participants who listen to music while studying score higher on a test than those who do not. What is the dependent variable in this experiment?
A researcher matches participants in pairs based on age and then randomly assigns one from each pair to the experimental group and the other to the control group. What type of design is this?
A researcher wants to know if background music affects test performance. She gives one group a test with music and another group the same test without music. What is the independent variable?
A researcher wants to test the effect of sleep on memory. She randomly assigns participants to either sleep for 4 hours or 8 hours, then tests their memory. What is the independent variable in this experiment?
A researcher wants to test the effect of temperature on aggression. She exposes participants to either a hot or cold room and measures aggressive behavior. What is the dependent variable?
Describe one way to reduce experimenter bias in an experiment.
Explain what is meant by 'operationalizing a variable' in experimental design.
Explain why replication is important in experimental research.
What is counterbalancing, and why is it used in within-subjects designs?
What is the difference between random sampling and random assignment?
What is the main advantage of using random assignment in experimental design?
What is the main difference between a laboratory experiment and a field experiment?
What is the main purpose of using a control group in an experiment?
What is the purpose of using a placebo in an experiment?
