a. Did authors’ analysis procedures address the stated purpose of the study? Why or why not?
b. According to the authors, how did the results of study relate to previous research findings?
c. According to the authors, what general conclu‑sions can be made about the results?
d. What are some potential threats to the internal validity of the study? Provide a justification for each threat.
e. What are some potential threats to the external validity of this study? Provide a justification for each threat.
f. What limitations did the authors discuss?