Describe the data. How were the data collected or obtained, such as by survey, from administrative data and so on? What is the unit of analysis? How reliable and valid are key independent, dependent and control variables? (e.g. Are they measuring what they say to be measuring? Is the survey reliable? How many people were sampled? Was there a lot of nonresponse?)

Your summary and critique should:
• State the objective of the study, including the independent variable(s) (of interest) and dependent variable(s). What is the study trying to accomplish, prove or substantiate? State the objective in one sentence that can stand alone. You may also elaborate further with a few sentences.
• Describe the data. How were the data collected or obtained, such as by survey, from administrative data and so on? What is the unit of analysis? How reliable and valid are key independent, dependent and control variables? (e.g. Are they measuring what they say to be measuring? Is the survey reliable? How many people were sampled? Was there a lot of nonresponse?)
• Describe the research design and analysis method used to estimate the causal effect. First, use one summary phrase, such as “randomized experiment,” “before-after natural experiment,” “difference-in-difference quasi-experiment,” “cross-sectional observational study with control variables,” and so on. Second, describe the causal estimation strategy more fully.
• Discuss the study’s internal validity—in other words, how strong or weak is the causal evidence, and why. Describe any bias in the estimated causal effect and the reason for that bias. If possible predict the impact of that bias to the results.
• Summarize the main findings. Discuss both statistical and practical significance of the results.
• Discuss the generalizability of the results (external validity).
The critique should be written as if the reader is someone knowledgeable about research methods interested in the purpose, quality and value of the study. In general, do not quote from the study. Describe in your own words.