What was good and bad about the way the researchers are trying to answer their research question?

Write a report for each article, 4 articles in total.
1 page for each report, 3000-4000 characters per page.
The report should answer the 4 questions below. Make sure you give full and complete answers for each question. It is fine for you to format your report as questions and answers.
4 questions (answer in your own words, use appropriate citation methods)

1. Give a short (3-4 sentences) description of the article.
2. What was good and bad about the way the researchers are trying to answer their research question?
3. What would you do differently in order to address this research question?
4. What question would you ask next and how would you go about trying to answer it? Identify potential confounds or alternative explanations of the expected results.