please answer the questions below 12

a. Explain why both the design and the results of a study are important for addressing a quasi-experiment’s internal validity. (3 sentence minimum)

b. Find one real-life quasi-experimental study or small-n study that has been done by researchers but is one that was not discussed in your book and include the url for the study. For this example study, explain why the quasi-experimental or small-n design was required. Explain the study and the results itself in your own words (do not copy and paste from the study). Explain why the design was used. Explain the threats to internal validity in the study and how these were dealt with. Explain the external validity of the study. Finally, address the limitations of the study and anything that you think the authors could have done differently to improve their study. (8 sentence minimum)