The traditional view of the scientific process. The traditional view of the scientific process goes something like this. You get two groups. You measure them before the study begins. You do something to one group and you don’t do something to the other. You control everything else so that the two groups are as similar as possible. Then after a bit, you measure them to see if there are differences between the two groups. [slide]. If there are, you can say that the thing you did to the one group was the cause of the difference.

Many think of this as THEE scientific method. This is often called controlled experimental research (CER) or controlled experimental studies (CES). You control all the variables except for one (the treatment or independent variable) in order to find out if something was the cause of something  ...