Exercise 2 – Comparison Groups

Comparison groups are one of the important elements to the scientific control of a research design.

Choose one type of comparison group from the list provided in the book and expand upon how the inclusion of this type of comparison group would improve the overall validity of the findings.

The name of the book is :  Edmonds, W. A., & Kennedy, T. D. (2017). An applied guide to research designs: Quantitative, qualitative, and mixed methods (2nd ed). Thousand Oaks, CA: Sage.