About
The characteristics of Experimental Research are:
- Random sampling from a population
- Random assignment to treatment conditions (treatment group)
As you cane see, Experimentational Research is characterized by randomness.
See also Statistics - (Scientific) Control (Group)
It doesn’t matter how beautiful your theory is, it doesn’t matter how smart you are. If it doesn’t agree with experiments, it’s wrong.
Design
Pre-post
In a Pre-post Design experimentation, you measure before and after the experimentation.