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 10
A researcher is testing the effect of sleep on memory. She gives one group 8 hours of sleep and another group 4 hours. What is the independent variable?
A researcher wants to know if exercise improves mood. She measures participants' mood before and after a week of daily exercise. What is the dependent variable?
Describe the difference between a control group and an experimental group.
Describe the main advantage of using a double-blind experiment.
A psychologist wants to test if a new drug reduces anxiety. She gives the drug to one group and a sugar pill to another. What is the sugar pill called? (1) Placebo (2) Control (3) Dependent variable (4) Confound
A researcher finds that students who study in groups score higher than those who study alone. What is the dependent variable in this study? (1) Study method (2) Test scores (3) Number of students (4) Group size
A researcher is testing the effect of sleep on memory. She gives one group 8 hours of sleep and another group 4 hours. What is the independent variable?
A researcher wants to know if exercise improves mood. She measures participants' mood before and after a week of daily exercise. What is the dependent variable?
A psychologist wants to test if a new drug reduces anxiety. She gives the drug to one group and a sugar pill to another. What is the sugar pill called? (1) Placebo (2) Control (3) Dependent variable (4) Confound
A researcher finds that students who study in groups score higher than those who study alone. What is the dependent variable in this study? (1) Study method (2) Test scores (3) Number of students (4) Group size
A researcher wants to test if listening to music affects concentration. She has one group listen to music while studying and another group study in silence. What is the independent variable in this experiment? (1) The amount of time spent studying (2) The presence or absence of music (3) The test scores (4) The number of participants
A researcher wants to test the effect of noise on reading comprehension. She tests the same group of students in both quiet and noisy conditions. What type of experimental design is this? (1) Independent groups (2) Repeated measures (3) Matched pairs (4) Case study
Fill in the blank: A __________ is a prediction about the relationship between variables that can be tested.
Fill in the blank: A variable that is kept the same in all groups of an experiment is called a __________ variable.
Fill in the blank: In a double-blind experiment, neither the participants nor the __________ know who is in the experimental or control group.
Fill in the blank: The __________ effect occurs when participants change their behavior because they know they are being observed.
True or False: A hypothesis must be testable and falsifiable.
True or False: Confounding variables can affect the validity of an experiment's results.
True or False: Experimental design helps researchers establish cause-and-effect relationships.
True or False: In a matched pairs design, participants are paired based on similar characteristics and then assigned to different groups.
