Abstract: Experimental inquiry does not always consist of one independent variable and one dependent variable. Sometimes several independent variables can contribute to changes in a dependent variable. When such situations arise, experimentation often must take on a different approach – in effect two or more experiments the results of which must be merged to produce a single unified outcome. 

Experiments with Medium Complexity Systems – Example of a Medium Complexity Lab – Experiments with Higher Complexity Systems – Example of a Higher Complexity Lab