SAGE Journal Articles

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Article 1
Barnes, S. B., & Whinnery, K. W. (2002). Effects of functional mobility skills training for young students with physical disabilities. Exceptional Children, 68(3), 313–324.
 

URL: http://ecx.sagepub.com/cgi/reprint/68/3/313?ijkey=yxY4dn5fPVsBk&keytype=ref&siteid=specx
 

Questions that apply to this article:

1. Describe the type of experimental design that is used for this study; how does it fit with the authors’ research aims?
2. What are the independent and dependent variables in this study?
3. How did the authors address the threats to internal/external validity in this study?

 

Article 2
Bracht, G. A., & Glass, G. V. (1968). External validity of experiments. American Educational Research Journal, 5(4), 437–474.
 

URL:

http://140.116.183.121/~sheu/eduResearch/bib/externalValidityOfExperiments.pdf
 

Questions that apply to this article:

1. How do the authors define external validity and what are the two types of external validity?
2. List and briefly describe the threats to ecological validity.
3. Which of the threats to external validity in this article are most important to you and why?