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The control group is composed of participants who do not receive the experimental treatment. When conducting an experiment, these people are randomly assigned to be in this group. They also closely resemble the participants who are in the experimental group or the individuals who receive the treatment. While they do not receive the treatment, they do play a vital role in the research process. Experimenters compare the experimental group to the control group to determine if the treatment had an effect.
By serving as a comparison group, researchers are able to isolate the independent variable and look at the impact it had. Bertone J. Ethical, scientific and practical standards in clinical practice research. Equine Vet J. Contact address: Matheus Melo Pithon. Altamirando da Costa Lima - Recreio. Matheus Melo Pithon. Dental Press International Av. Stay informed of issues for this journal through your RSS reader. PDF English. Google Google Scholar. They also closely resemble the participants who are in the experimental group or the individuals who receive the treatment.
What is the primary reason to include a control group in an experiment? The control group allows you to make comparisons to the experimental group. In an experimental study, participants are randomly assigned to either treatment or control, ensuring that confounding factors are also randomly assigned.
This is ideal. A controlled experiment is one in which every parameter is held constant except for the experimental independent variable. A variable that remains unchanged or held constant to prevent its effects on the outcome and therefore may verify the behavior of and the relationship between independent and dependent variables. Control variables are important in scientific experiments to test the validity of the results.
Begin typing your search term above and press enter to search. Press ESC to cancel. Skip to content Home Psychology What is the importance of control group in scientific experiment? Ben Davis August 28, What is the importance of control group in scientific experiment?
Why are controls important in an experiment? What is the purpose of a control group in psychology? Why is it important to have a control group quizlet? What is the purpose of a control? In the same antibiotic example, the negative control group would be a Petri dish of bacteria with no antibiotic of any kind added.
The results of the control and the experimental group are then compared. If all new antibiotic inhibited the bacteria, but the negative control group also did, then some other variable may have had an effect, confounding the results.
Finally, control groups can be sued to establish a baseline. For example, a researcher testing the radioactivity levels of various samples with a Geiger counter would also sample the background level, allowing them to adjust the results accordingly. The background level serves as a control. Establishing strong scientific control groups is arguably a more important part of any scientific design than the actual samples.
Failure to provide sufficient evidence of strong control groups can completely undermine a study, however high significance-levels indicate low probability of error.
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