1. 1 Exploring Quasi-experiments Lab Assignment #5 Due May 16, 2008 Locate an empirical journal article that employs a quasi-experimental design. Closely critique the article by completing the following slides. You should hand in your responses by printing the slides six to a page. Be sure to include a copy of the article with your assignment.

2. 2 Purpose of Research

3. 3 Variables of interest The Independent Variables (causes) The Dependent Variables (outcomes) The Covariates

4. 4 Participant assignment

5. 5 Cook and Campbell’s UTOS Units: Treatment: Observations: Setting:

6. 6 Threats to Internal Validity Specific to Quasi-experiments History: Maturation: Instrumentation: Statistical Regression:

7. 7 Additional Threats to Internal Validity

8. 8 Threats to Construct Validity

9. 9 Threats to External Validity

10. 10 Threats to Statistical Conclusion Validity

11. 11 Improving the research