This video explains how to use control variables in the structural equation modeling software of AMOS. Explanation of what is a control variable along with why they are beneficial is discussed. A demonstration of single and multiple control variables is given.

If you are looking for more information about structural equation modeling, see my book titled, Applied Structural Equation Modeling using AMOS. The book can be purchased at:
Amazon:
https://www.amazon.com/AppliedStruct...
and
Barnes and Noble:
https://www.barnesandnoble.com/w/appl