Click on the following links. Please note these will open in a new window.
- Types of Designs--The Web Center for Social Research Methods provides a brief overview of the different types of experimental designs.
- Observational vs. Experimental Studies--The Institute for Work and Health (IWH) provides a brief discussion on the both observational and experimental studies and the strengths and weaknesses associated with each of the studies.
- Natural Experiments--This website briefly discusses natural experiments and their strengths and limitations.