Experimental design There are several things to consider when looking at reported experiments or when designing your own. (1)Is there a 'control'? A control group of organisms is treated in the same way as the experimental group, except for the factors being studied in the experiment.Experimental design Experimental design There are several things to consider when looking at reported experiments or when designing your own. (1) Is there a 'control'? A control group of organisms is treated in the same way as the experimental group, except for the factors being studied in the experiment