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True or False
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1
Random assignment is used to increase external validity.
A)True
B)False
2
To rule out third variables, a researcher should use random assignment.
A)True
B)False
3
To prevent demand effects, a researcher should conduct a double-blind experiment.
A)True
B)False
4
The use of placebo control groups is most controversial in therapy outcome studies.
A)True
B)False
5
In an experiment, the independent variable is what is measured.
A)True
B)False
6
In an experiment, the dependent variable is what is changed by the experimenter.
A)True
B)False
7
The experimental method would most likely be used by a researcher interested in determining the relationship between IQ and level of anxiety.
A)True
B)False
8
In a double-blind study a researcher tests the effectiveness of a medication so that neither the person administering nor the person receiving the treatment knows whether the subject is in the control or the experimental group.
A)True
B)False
9
The survey method is most effective for determining cause and effect relationships.
A)True
B)False
10
The variable whose level is adjusted or controlled by the experimenter is referred to as the correlational variable.
A)True
B)False





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