RESEARCH METHODS THINKING CRITICALLY WITH PSYCHOLOGICAL SCIENCE
THE SCIENTIFIC METHOD AND DESCRIPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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help minimize the effects of volunteer bias
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to ensure that the target population is represented
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complete a stratified sample
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show the effect of the treatment and no other factors
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Detailed explanation-1: -The control group is just as important as the experimental group; without it there would be no experiment. Without a control group it is impossible to confidently determine which changes or outcomes are due to the intervention as opposed to being due to some other variable.
Detailed explanation-2: -A true experiment (a.k.a. a controlled experiment) always includes at least one control group that doesn’t receive the experimental treatment. However, some experiments use a within-subjects design to test treatments without a control group.
Detailed explanation-3: -A control group in an experiment does not receive the treatment. Instead, it serves as a comparison group for the treatments. Researchers compare the results of a treatment group to the control group to determine the effect size, also known as the treatment effect.
Detailed explanation-4: -A control group is a group separated from the rest of the experiment such that the independent variable being tested cannot influence the results. This isolates the independent variable’s effects on the experiment and can help rule out alternative explanations of the experimental results.