4th grade reading comprehension

This posting overviews two educational research journal articles and compares and contrasts these articles according to the questions:

What are the focuses/topics of the articles you have selected?

What is the primary research question or hypothesis of this research project?How are they different?
Discuss the research articles the authors cite in the articles. Do you think one author has a better literature review than the other?Why or why not?
Discuss any differences or similarities in the perspectives presented in each article.
Compare how the two articles collected the data.
Were the studies valid and reliable?
In your opinion, which study proved its conclusion more effectively? Why?