Characteristics of Experiments Quiz

What is the main characteristic of nonexperimental experiments?

• They manipulate a variable to establish a cause and effect relationship.

• They do not manipulate any sort of variable.

• They involve random assignment of participants.

• They always include a control group.

What is an independent variable (IV) in an experiment?

• The factor that is manipulated in the experiment.

• The factor that is being measured in the experiment.

• An uncontrolled variable that may cause changes.

• The group that does not receive treatment.

What is a confounding variable?

• A variable that is intentionally manipulated.

• A variable that is being measured in the experiment.

• An uncontrolled variable that may unintentionally cause change in the dependent variable.

• A variable that is part of the control group.

What is the purpose of random assignment in experiments?

• To ensure the independent variable is manipulated.

• To limit the amount of confoundment and establish a cause and effect relationship.

• To measure the dependent variable accurately.

• To ensure the control group receives treatment.

What is the role of the control group in an experiment?

• To receive the treatment being tested.

• To act as a comparison when the results are found.

• To manipulate the independent variable.

• To measure the dependent variable.

What is the purpose of a placebo group in an experiment?

• To receive the actual treatment

• To determine the effectiveness of a treatment by receiving a fake version

• To ensure all participants receive the same treatment

• To influence the experimenter's bias

What is the placebo effect?

• When subjects are aware of the treatment they receive

• When the placebo group experiences an effect after receiving the actual treatment

• When the placebo group believes they experience an effect after receiving a fake treatment

• When the experimenter influences the results

In a single-blind procedure, who is unaware of the treatment being received?

• The experimenters

• The subjects

• Both the experimenters and the subjects

• The placebo group

What is a double-blind procedure?

• When only the subjects are unaware of the treatment

• When only the experimenters are unaware of the treatment

• When neither the experimenters nor the subjects are aware of the treatment

• When the placebo group receives the actual treatment

What is experimenter bias?

• When the subjects influence the results

• When the experimenter unknowingly influences the results

• When the placebo group receives the actual treatment

• When the sample is not representative