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 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 noise on concentration. She tests one group in a quiet room and another group in a noisy room. What type of experimental design is this? (1) Within-subjects, (2) Between-subjects, (3) Quasi-experimental, (4) Correlational.
In a double-blind experiment, who is unaware of the group assignments? (1) Only the participants, (2) Only the researchers, (3) Both participants and researchers, (4) Neither participants nor researchers.
Which of the following best defines an independent variable in an experiment? (1) The variable that is measured, (2) The variable that is manipulated, (3) The variable that is kept constant, (4) The variable that is random.
Which of the following best describes a between-subjects design? (1) Each participant experiences all conditions, (2) Different participants experience different conditions, (3) All participants are in the control group, (4) No manipulation of variables.
Fill in the blank: A __________ variable is any variable other than the independent variable that could affect the dependent variable.
Fill in the blank: The __________ effect occurs when participants improve simply because they are being studied, not because of the experimental manipulation.
Fill in the blank: The __________ hypothesis states that there will be no significant difference between experimental groups.
Fill in the blank: The extent to which the results of an experiment can be generalized to other settings is called __________ validity.
True or False: A quasi-experiment lacks random assignment of participants to groups.
True or False: Confounding variables can threaten the internal validity of an experiment.
True or False: Demand characteristics can influence participants to behave in ways they think the experimenter expects.
True or False: In a single-blind experiment, only the participants are unaware of which group they are in.
