Chapter 7

Quantitative Research Design


Distinguishing Between Descriptive and Experimental Studies

Identifying research designs in the research literature is not always easy. Want another source of information? Check out the opensource textbook Research Methods in Psychology, which has two chapters devoted to non-experimental and experimental research designs. Although the textbook is based in psychology, the principles for distinguishing between non-experimental (or correlational) and experimental studies remain the same.


Randomly Assign Participants to Experimental Groups

This GraphPad website provides an interactive program that will help you randomly assign participants to experimental groups. Fast and easy!


Longitudinal Design Example

This article by McEwan and Guerrero uses a longitudinal design with college freshmen to examine the development of communication skills and the formation of their social networks.

Updated August 6, 2020