Scribner and Cohens article on The Effect of Enforcement on Merchant Compliance with the Minimum Legal Drinking Age Law and Duneiers article Sidewalk Sleeping are research studies that differ based on research design and other methodological features. Describe, compare and contrast these studies in terms of their respective methodologies. As applicable, point out the study designs utilized, sampling format, concepts and theories presented, operationalization issues, key variables, problems encountered and potential remedies, and finally assess the key findings. In addition, what ethical concerns were evident and how did the respective researchers respond? How did the ethical issues presented compare to those found in Milgrams experiment?