Please select your evaluation design within an official policy evaluation. Then, provide the following explanation on how you would implement your evaluation design within an official policy evaluation. Be sure to include specific examples from the course readings, academic research, and professional experience. Provide a rationale for your implementation choices, including examples, and provide how you would address validity threats, particularly internal validity (plausible rival hypothesis). Provide a rationale for these plans, including any expected outcomes, and use examples to support your argument.

References are provided below:

• Langbein, L. (2012).Public program evaluation: A statistical guide(2nd ed.). Armonk, NY: ME Sharpe.
  • Chapter 2, "Defensible Program Evaluations: Four Types of Validity" (pp. 26-50)
  • Chapter 3, "Internal Validity: The Logic of Internal Validity" (pp. 51-72)
• McDavid, J. C., Huse, I., & Hawthorn, L. R. L. (2019).Program evaluation and performance measurement: An introduction to practice(3rd ed.). Thousand Oaks, CA: Sage.
  • Chapter 3, "Research Designs for Program Evaluations" (pp. 97-155)
• United States Government Accountability Office (USGAO). (2012). Designs for assessing program implementation and effectiveness. InDesigning evaluations: 2012 revision Download Designing evaluations: 2012 revision(pp. 31-49). Retrieved fromhttp://www.gao.gov/assets/590/588146.pdf