Title: Understanding the Purpose, Research Question, and Variables of the Boston Reentry Initiative Study The purpose of the Boston Reentry Initiative study, conducted by Braga, Piehl, and Hureau (2009), was to evaluate the effectiveness

one page paper 1-3 paragraphs  using this spcific source 
Braga, A. A., Piehl, A. M., & Hureau, D. (2009).  Controlling violent offenders released to the community: An evaluation of the Boston reentry initiative. Journal of Research in Crime and Delinquency, 46 (4), 411-436. http://dx.doi.org/10.1177/0022427809341935    must answer these  questions 
What was the study’s purpose (descriptive, exploratory, explanatory, and/or evaluation),
What was the study’s research question and (any stated) hypotheses, and
Explain all of the variables measured in the research (independent and dependent).