What do the letters O, X, Y, and R represent in group research designs?
1.What do the letters A, B, and C represent in single subject designs?
2.What do the letters O, X, Y, and R represent in group research designs?
3.What are threats to internal validity?
4.Explain history and maturation as to how they can be a threat to internal validity.
Read the following chapters in your text:
•Chapter 6: “Single System Research Designs”
•Chapter 8: “Sampling”
•Chapter 9, pp. 212–249: “Group Research Designs”
Britt, Michael. (2008, March 31). Episode 52: Research Design part 2 – Factorial Designs. [Video file]. Retrieved from http://www.thepsychfiles.com/2008/03/episode-52-repost-research-design-part-2-factorial-designs/
Textbook Information
Title: Program Evaluation: An Introduction (5th Ed)
Author: Royse, D., Thyer, B., & Padgett, D. (2010)
Physical Text ISBN: 978-0495601661
Publisher: Wadsworth, Cengage Learning
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