Participants are randomly assigned to different groups, such as the treatment group versus the control group.
In clinical research, randomized clinical trials are known as the gold standard for meaningful results.
It is important to note that random assignment differs fromrandom selection.
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Random assignment is a critical part of the experimental design that helps ensure the reliability of the study outcomes.
How exactly do researchers decide who will be part of an experiment?
As mentioned previously, this is often accomplished through something known as random selection.
Participants might be randomly assigned to thecontrol group, which does not receive the treatment in question.
The control group may receive a placebo or receive the standard treatment.
Participants may also be randomly assigned to theexperimental group, which receives the treatment of interest.
In larger studies, there can be multiple treatment groups for comparison.
There are simple methods of random assignment, like rolling the die.
However, there are more complex techniques that involve random number generators to remove any human error.
There can also be random assignment to groups with pre-established rules or parameters.
Random assignment is essential because it increases the likelihood that the groups are the same at the outset.
The participants in the control group consume aplacebodrink prior to the exam that does not contain any caffeine.
Those in the experimental group, on the other hand, consume a caffeinated beverage before taking the test.
A Word From Verywell
Random assignment plays an important role in the psychology research process.
).SAGE Publications, Inc.; 2015.
