How is the experimental group different from the control group? Experimental group in a clinical study is the group which receives the actual drug or treatment being studied. The control group group and experimental group must be identical in all relevant ways except for the introduction of a suspected causal agent into the experimental group. Controls, double blind procedure, and randomized testing are used to reduce error, self-deception and bias. A experimental group is identical to the control group in all way except for the difference in the experimental condition, except for the varible that is changing in the experiment.
An experimental group is a group that receives a treatment in an experiment. An experimental group is a group of test subjects who were selected to participate in an experiment chosen randomly or deliberately to receive the experimental condition. Control groups are used in controlled experiments to curb bias. Both control group and experimental groups are treated exactly the same in every way possible except for variable difference. Control groups are not manipulated. Control groups are used to compare the experimental group against. The control group is used so that you have something to compare the experimental group to.
Double blind procedure is a method of enhancing internal validity in an experiment. In double blind procedure, neither the researcher nor the subjects are made aware of which group is the experimental group and which is the control group. In a double-blind study in clinical trials: two identical groups, control group and experimental group, of patients are compared, one of which receives the drug and one of which receives a placebo. The patients and the doctor know which group receives the real drug, which serves to curb bias.